{"id":4370,"date":"2020-07-16T05:18:01","date_gmt":"2020-07-15T23:48:01","guid":{"rendered":"http:\/\/ncertsolutions.guru\/?p=4370"},"modified":"2020-07-17T08:46:14","modified_gmt":"2020-07-17T03:16:14","slug":"cbse-sample-papers-for-class-10-science-hindi-paper-4","status":"publish","type":"post","link":"https:\/\/ncertsolutions.guru\/cbse-sample-papers-for-class-10-science-hindi-paper-4\/","title":{"rendered":"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4"},"content":{"rendered":"<p>CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 is part of <a href=\"https:\/\/ncertsolutions.guru\/cbse-sample-papers-for-class-10-science-in-hindi-medium\/\">CBSE Sample Papers for Class 10 Science in Hindi Medium<\/a>\u00a0. Here we have given CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4<\/p>\n<h2>CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4<\/h2>\n<table style=\"height: 188px;\" width=\"316\">\n<tbody>\n<tr>\n<td width=\"122\"><strong>Board<\/strong><\/td>\n<td width=\"122\">CBSE<\/td>\n<\/tr>\n<tr>\n<td width=\"122\"><strong>Class<\/strong><\/td>\n<td width=\"122\">X<\/td>\n<\/tr>\n<tr>\n<td width=\"122\"><strong>Subject<\/strong><\/td>\n<td width=\"122\">Science<\/td>\n<\/tr>\n<tr>\n<td width=\"122\"><strong>Sample Paper Set<\/strong><\/td>\n<td width=\"122\">Paper 4<\/td>\n<\/tr>\n<tr>\n<td width=\"122\"><strong>Category<\/strong><\/td>\n<td width=\"122\"><a href=\"http:\/\/ncertsolutions.guru\/cbse-sample-papers\/\">CBSE Sample Papers<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Students who are going to appear for CBSE Class 10 Examinations are advised to practice the CBSE sample papers given here which is designed as per the latest Syllabus and marking scheme as prescribed by the CBSE is given here. Paper 4 of Solved CBSE Sample Papers for Class 10 Science in Hindi Medium is given below with free PDF download solutions.<\/p>\n<p><strong>\u0938\u092e\u092f : 3 \u0918\u0923\u094d\u091f\u0947<\/strong><br \/>\n<strong>\u092a\u0942\u0930\u094d\u0923\u093e\u0902\u0915 : 80<\/strong><\/p>\n<p style=\"text-align: center;\"><strong>\u0938\u093e\u092e\u093e\u0928\u094d\u092f \u0928\u093f\u0930\u094d\u0926\u0947\u0936 :<\/strong><\/p>\n<ul>\n<li>\u0907\u0938 \u092a\u094d\u0930\u0936\u094d\u0928 \u092a\u0924\u094d\u0930 \u0915\u0947 \u0926\u094b \u092d\u093e\u0917, A \u0935 B \u0939\u0948\u0902\u0964 \u0906\u092a \u0915\u094b \u0926\u094b\u0928\u094b\u0902 \u092d\u093e\u0917 \u0915\u0930\u0928\u0947 \u0939\u0948\u0902\u0964<\/li>\n<li>\u0938\u092d\u0940 \u092a\u094d\u0930\u0936\u094d\u0928 \u0905\u0928\u093f\u0935\u093e\u0930\u094d\u092f \u0939\u0948\u0902\u0964<\/li>\n<li>\u092d\u093e\u0917 A \u0915\u0947 \u0938\u092d\u0940 \u092a\u094d\u0930\u0936\u094d\u0928 \u090f\u0915 \u0938\u093e\u0925 \u0915\u0930\u0928\u0947 \u0939\u0948\u0902 \u0924\u0925\u093e \u092d\u093e\u0917 B \u0915\u0947 \u0938\u092d\u0940 \u092a\u094d\u0930\u0936\u094d\u0928 \u090f\u0915 \u0938\u093e\u0925 \u0915\u0930\u0928\u0947 \u0939\u0948\u0902\u0964<\/li>\n<li>\u092d\u093e\u0917 A \u0915\u0947 \u092a\u094d\u0930\u0936\u094d\u0928 \u0938\u0902\u0966 1 \u0935 2 \u090f\u0915 \u0905\u0902\u0915 \u0915\u0947 \u0939\u0948\u0902\u0964 \u0907\u0928\u0915\u093e \u0909\u0924\u094d\u0924\u0930 \u090f\u0915 \u0936\u092c\u094d\u0926 \u0905\u0925\u0935\u093e \u090f\u0915 \u0935\u093e\u0915\u094d\u092f \u092e\u0947\u0902 \u0932\u093f\u0916\u0928\u093e \u0939\u0948\u0964<\/li>\n<li>\u092a\u094d\u0930\u0936\u094d\u0928 \u0938\u0902\u0966 3 \u0938\u0947 5 \u0924\u0915 \u0926\u094b \u0905\u0902\u0915 \u0915\u0947 \u0939\u0948\u0902\u0964 \u0907\u0928\u0915\u093e \u0909\u0924\u094d\u0924\u0930 30 \u0936\u092c\u094d\u0926\u094b\u0902 \u092e\u0947\u0902 (\u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u092a\u094d\u0930\u0936\u094d\u0928 \u0915\u0947 \u0932\u093f\u090f) \u0932\u093f\u0916\u093f\u090f\u0964<\/li>\n<li>\u092a\u094d\u0930\u0936\u094d\u0928 \u0938\u0902\u0966 6 \u0938\u0947 15 \u0924\u0915 \u0924\u0940\u0928 \u0905\u0902\u0915 \u0915\u0947 \u0939\u0948\u0902\u0964 \u0907\u0928\u092e\u0947\u0902 \u0938\u0947 \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u092a\u094d\u0930\u0936\u094d\u0928 \u0915\u093e \u0909\u0924\u094d\u0924\u0930 50 \u0936\u092c\u094d\u0926\u094b\u0902 \u092e\u0947\u0902 \u0932\u093f\u0916\u093f\u090f\u0964<\/li>\n<li>\u092a\u094d\u0930\u0936\u094d\u0928 \u0938\u0902\u0966 16 \u0938\u0947 21 \u0924\u0915 \u092a\u093e\u0901\u091a \u0905\u0902\u0915 \u0915\u0947 \u0939\u0948\u0902\u0964 \u0907\u0928\u092e\u0947\u0902 \u0938\u0947 \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u092a\u094d\u0930\u0936\u094d\u0928 \u0915\u093e \u0909\u0924\u094d\u0924\u0930 70 \u0936\u092c\u094d\u0926\u094b\u0902 \u092e\u0947\u0902 \u0932\u093f\u0916\u093f\u090f\u0964<\/li>\n<li>\u092d\u093e\u0917 B \u0915\u0947 \u092a\u094d\u0930\u0936\u094d\u0928 \u0938\u0902\u0966 22 \u0938\u0947 27 \u0924\u0915 \u092a\u094d\u0930\u092f\u094b\u0917\u093e\u0924\u094d\u092e\u0915 \u0915\u094c\u0936\u0932 \u092a\u0930 \u0906\u0927\u093e\u0930\u093f\u0924 \u0939\u0948\u0902\u0964 \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u092a\u094d\u0930\u0936\u094d\u0928 \u0926\u094b \u0905\u0902\u0915 \u0915\u093e \u0939\u0948\u0964<\/li>\n<\/ul>\n<p style=\"text-align: center;\"><strong>SECTION A<\/strong><\/p>\n<p>\u092a\u094d\u0930\u09661.<br \/>\n\u090f\u0915 \u0910\u0938\u0947 \u092a\u0941\u0937\u094d\u092a \u0915\u093e \u0928\u093e\u092e \u0932\u093f\u0916\u093f\u090f \u091c\u093f\u0938\u092e\u0947\u0902 \u092a\u0941\u0902\u0915\u0947\u0938\u0930 \u0935 \u0938\u094d\u0924\u094d\u0930\u0940\u0915\u0947\u0938\u0930 \u0926\u094b\u0928\u094b\u0902 \u092d\u093e\u0917 \u092a\u093e\u090f \u091c\u093e\u0924\u0947 \u0939\u0948\u0902\u0964<\/p>\n<p>\u092a\u094d\u0930\u09662.<br \/>\n\u092a\u0947\u092a\u094d\u0938\u093f\u0928 \u090f\u0935\u0902 \u091f\u094d\u0930\u0947\u092a\u094d\u0938\u093f\u0928 \u090f\u0902\u091c\u093e\u0907\u092e\u094b\u0902 \u0915\u0947 \u092c\u0940\u091a \u090f\u0915 \u0905\u0902\u0924\u0930 \u0932\u093f\u0916\u093f\u090f\u0964 \u092a\u0947\u092a\u094d\u0938\u093f\u0928<\/p>\n<p>\u092a\u094d\u0930\u09663.<br \/>\n\u090f\u0915 \u0924\u0924\u094d\u0935 &#8220;X&#8221; \u091c\u093f\u0938\u0915\u093e \u092a\u0930\u092e\u093e\u0923\u0941 \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 35 \u0939\u0948 \u0924\u0925\u093e \u0909\u0938\u0915\u0947 \u092a\u0930\u092e\u093e\u0923\u0941 \u092e\u0947\u0902 \u092f\u0926\u093f 18 \u0928\u094d\u092f\u0942\u091f\u094d\u0930\u0949\u0928 \u0939\u094b\u0902 \u0924\u094b \u0909\u0938 \u0924\u0924\u094d\u0935 &#8220;X&#8221; \u0915\u0940 \u0938\u092e\u0942\u0939 \u0938\u0902\u0916\u094d\u092f\u093e \u0924\u0925\u093e \u0906\u0935\u0930\u094d\u0924 \u0938\u0902\u0916\u094d\u092f\u093e \u091c\u094d\u091e\u093e\u0924 \u0915\u0940\u091c\u093f\u090f\u0964<\/p>\n<p>\u092a\u09664.<br \/>\n1.2 m \u090a\u0901\u091a\u093e\u0908 \u0935\u093e\u0932\u0947 \u092c\u093f\u092e\u094d\u092c \u0915\u094b \u090f\u0915 \u0905\u0935\u0924\u0932 \u0926\u0930\u094d\u092a\u0923 \u0915\u0947 \u0938\u093e\u092e\u0928\u0947 \u0930\u0916\u093e \u0939\u0948\u0964 \u092f\u0926\u093f \u0926\u0930\u094d\u092a\u0923 \u0915\u0940 \u092b\u094b\u0915\u0938 \u0926\u0942\u0930\u0940 20 cm \u0939\u0948 \u0914\u0930 \u092c\u093f\u092e\u094d\u092c \u0915\u093e \u092a\u094d\u0930\u0924\u093f\u092c\u093f\u092e\u094d\u092c \u0926\u0930\u094d\u092a\u0923 \u0915\u0947 \u0938\u093e\u092e\u0928\u0947 60 cm \u0915\u0940 \u0926\u0942\u0930\u0940 \u092a\u0930 \u0935\u093e\u0938\u094d\u0924\u0935\u093f\u0915 \u092a\u094d\u0930\u0924\u093f\u092c\u093f\u092e\u094d\u092c \u092c\u0928\u0924\u093e \u0939\u0948\u0964 \u091c\u094d\u091e\u093e\u0924 \u0915\u0940\u091c\u093f\u090f \u0915\u093f \u092c\u093f\u092e\u094d\u092c \u0926\u0930\u094d\u092a\u0923 \u0915\u0947 \u0938\u093e\u092e\u0928\u0947 \u0915\u093f\u0924\u0928\u0940 \u0926\u0942\u0930\u0940 \u092a\u0930 \u0930\u0916\u093e \u0939\u0948? \u092c\u0928\u0928\u0947 \u0935\u093e\u0932\u0947 \u092a\u094d\u0930\u0924\u093f\u092c\u093f\u092e\u094d\u092c \u0915\u0940 \u090a\u0901\u091a\u093e\u0908 \u091c\u094d\u091e\u093e\u0924 \u0915\u0940\u091c\u093f\u090f\u0964<\/p>\n<p>\u092a\u094d\u0930\u09665.<br \/>\n\u0917\u0948\u0930-\u092a\u0930\u092e\u094d\u092a\u0930\u093e\u0917\u0924 \u090a\u0930\u094d\u091c\u093e \u0938\u094d\u0930\u094b\u0924\u094b\u0902 \u0915\u0947 \u0926\u094b\u0939\u0928 \u0915\u0940 \u0915\u094d\u092f\u093e \u0906\u0935\u0936\u094d\u092f\u0915\u0924\u093e \u0939\u0948? \u0915\u094b\u0908 \u0926\u094b \u092e\u0941\u0916\u094d\u092f \u0915\u093e\u0930\u0923 \u0932\u093f\u0916\u093f\u090f\u0964<\/p>\n<p>\u092a\u094d\u0930\u09666.<br \/>\n\u0909\u0938 \u0935\u0948\u0926\u094d\u092f\u0941\u0924 \u0938\u0902\u092f\u0902\u0924\u094d\u0930 \u0915\u093e \u0928\u093e\u092e \u0932\u093f\u0916\u093f\u090f \u091c\u094b \u092f\u093e\u0902\u0924\u094d\u0930\u093f\u0915 \u090a\u0930\u094d\u091c\u093e \u0915\u094b \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u090a\u0930\u094d\u091c\u093e \u092e\u0947\u0902 \u0930\u0942\u092a\u093e\u0902\u0924\u0930\u093f\u0924 \u0915\u0930\u0924\u093e \u0939\u0948\u0964 \u0907\u0938\u0915\u093e \u090f\u0915 \u0928\u093e\u092e\u093e\u0902\u0915\u093f\u0924 \u091a\u093f\u0924\u094d\u0930 \u092c\u0928\u093e\u090f\u0902 \u0924\u0925\u093e \u0907\u0938\u0915\u0940 \u0915\u093e\u0930\u094d\u092f\u0935\u093f\u0927\u093f \u0915\u093e \u0938\u093f\u0926\u094d\u0927\u093e\u0902\u0924 \u092d\u0940 \u0932\u093f\u0916\u093f\u090f\u0964<br \/>\n\u0905\u0925\u0935\u093e<br \/>\n(i) \u0935\u0948\u0926\u094d\u092f\u0941\u0924 \u0909\u092a\u0915\u0930\u0923\u094b\u0902 \u092e\u0947\u0902 \u092d\u0942\u0938\u0902\u092a\u0930\u094d\u0915 \u0924\u093e\u0930 \u0915\u094b \u0915\u094d\u092f\u093e \u0915\u093e\u0930\u094d\u092f \u0939\u0948?<br \/>\n(ii) \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u092a\u094d\u0930\u0935\u093e\u0939 \u092e\u0947\u0902 \u0932\u0918\u0941\u092a\u0925\u0928 \u0915\u093e \u0915\u094d\u092f\u093e \u0905\u0930\u094d\u0925 \u0939\u0948? \u0907\u0938\u0915\u0940 \u0935\u094d\u092f\u093e\u0916\u094d\u092f\u093e \u0915\u0940\u091c\u093f\u090f\u0964<br \/>\n(iii) \u0928\u093f\u092e\u094d\u0928\u0932\u093f\u0916\u093f\u0924 \u0915\u0947 \u0932\u093f\u090f \u0915\u093f\u0924\u0928\u0940 \u092e\u093e\u0924\u094d\u0930\u093e \u0915\u093e \u092b\u094d\u092f\u0942\u091c\u093c \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u092a\u0930\u093f\u092a\u0925 \u092e\u0947\u0902 \u0932\u0917\u093e\u0928\u093e \u091a\u093e\u0939\u093f\u090f :<br \/>\n(a) \u092c\u0932\u094d\u092c \u0924\u0925\u093e \u092a\u0902\u0916\u094b\u0902 \u0915\u0947 \u0932\u093f\u090f<br \/>\n(b) 2 kW \u092f\u093e \u0909\u0938\u0938\u0947 \u0905\u0927\u093f\u0915 \u0936\u0915\u094d\u0924\u093f \u0935\u093e\u0932\u0947 \u0909\u092a\u0915\u0930\u0923\u094b\u0902 \u0915\u0947 \u0932\u093f\u090f?<\/p>\n<p>\u092a\u094d\u0930\u09667.<br \/>\n\u090f\u0915 \u0910\u0938\u0947 \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u092a\u0930\u093f\u092a\u0925 \u0915\u093e \u0906\u0930\u0947\u0916 \u092c\u0928\u093e\u0907\u090f \u091c\u093f\u0938\u092e\u0947\u0902 \u090f\u0915 \u0938\u0947\u0932, \u090f\u0915 \u0915\u0941\u0902\u091c\u0940, \u090f\u0915 \u0910\u092e\u0940\u091f\u0930 \u0924\u0925\u093e \u090f\u0915 4\u2126 \u0915\u0947 \u092a\u094d\u0930\u0924\u093f\u0930\u094b\u0927\u0915 \u0915\u0947 \u0938\u093e\u0925 \u0936\u094d\u0930\u0947\u0923\u0940 \u0915\u094d\u0930\u092e \u092e\u0947\u0902, \u0926\u094b 8\u2126 \u0915\u0947 \u092a\u094d\u0930\u0924\u093f\u0930\u094b\u0927\u0915 \u091c\u094b \u092a\u0930\u0938\u094d\u092a\u0930 \u0938\u092e\u093e\u0902\u0924\u0930 \u0915\u094d\u0930\u092e \u092e\u0947\u0902 \u0932\u0917\u0947 \u0939\u0948\u0902, \u0909\u0938\u0915\u0947 \u0938\u093e\u0925 \u091c\u0941\u0921\u093c\u0947 \u0939\u0948\u0902\u0964 \u0938\u092e\u093e\u0902\u0924\u0930 \u0915\u094d\u0930\u092e \u0915\u0947 \u0938\u093e\u0925 \u0935\u094b\u0932\u094d\u091f\u092e\u0940\u091f\u0930 \u092d\u0940 \u0932\u0917\u093e \u0939\u0948\u0964 \u092f\u0947 \u0924\u0940\u0928\u094b\u0902 \u092a\u094d\u0930\u0924\u093f\u0930\u094b\u0927\u0915, \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u0905\u0927\u093f\u0915\u0924\u092e \u090a\u0930\u094d\u091c\u093e \u0932\u0947\u0915\u0930 16\u2126 \u0915\u0940 \u0936\u0915\u094d\u0924\u093f \u0915\u094b \u092c\u093f\u0928\u093e \u092a\u093f\u0918\u0932\u0947 \u0939\u0941\u090f \u0938\u0939 \u0938\u0915\u0924\u0947 \u0939\u0948\u0902\u0964 \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u092a\u094d\u0930\u0924\u093f\u0930\u094b\u0927\u0915 \u092e\u0947\u0902 \u0938\u0947 \u0905\u0927\u093f\u0915\u0924\u092e \u0915\u093f\u0924\u0928\u0940 \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u0927\u093e\u0930\u093e \u092a\u094d\u0930\u0935\u093e\u0939\u093f\u0924 \u0939\u094b \u0938\u0915\u0924\u0940 \u0939\u0948, \u0909\u0938\u0915\u0940 \u0917\u0923\u0928\u093e \u0915\u0940\u091c\u093f\u090f\u0964<\/p>\n<p>\u092a\u094d\u0930\u09668.<br \/>\n\u091c\u0932 \u0915\u0947 \u0935\u0948\u0926\u094d\u092f\u0941\u0924 \u0905\u092a\u0918\u091f\u0928 \u092e\u0947\u0902 :<br \/>\n(a) \u0915\u0947\u0925\u094b\u0921 \u0924\u0925\u093e \u090f\u0928\u094b\u0921 \u092a\u0930 \u090f\u0915\u0924\u094d\u0930\u093f\u0924 \u0939\u094b\u0928\u0947 \u0935\u093e\u0932\u0940 \u0917\u0948\u0938\u094b\u0902 \u0915\u0947 \u0928\u093e\u092e \u0932\u093f\u0916\u093f\u090f\u0964<br \/>\n(b) \u090f\u0915 \u0907\u0932\u0947\u0915\u094d\u091f\u094d\u0930\u0949\u0921 \u092a\u0930 \u090f\u0915\u0924\u094d\u0930 \u0939\u094b\u0928\u0947 \u0935\u093e\u0932\u0940 \u0917\u0948\u0938 \u0915\u093e \u0906\u092f\u0924\u0928 \u0926\u0942\u0938\u0930\u0940 \u0917\u0948\u0938\u094b\u0902 \u0938\u0947 \u0926\u094b\u0917\u0941\u0928\u093e \u0915\u094d\u092f\u094b\u0902 \u0939\u0948?<br \/>\n(c) \u092f\u0926\u093f \u091c\u0932 \u092e\u0947\u0902 \u0924\u0928\u0941 H<sub>2<\/sub>SO<sub>4<\/sub> \u0905\u092e\u094d\u0932 \u0928\u0939\u0940\u0902 \u0921\u093e\u0932\u0947\u0902\u0917\u0947 \u0924\u094b \u0915\u094d\u092f\u093e \u0939\u094b\u0917\u093e?<\/p>\n<p>\u092a\u094d\u0930\u09669.<br \/>\n\u092e\u0947\u0928\u094d\u0921\u0947\u0932\u0940\u092b \u0915\u0940 \u0906\u0935\u0930\u094d\u0924 \u0938\u093e\u0930\u0923\u0940 \u0924\u0925\u093e \u0906\u0927\u0941\u0928\u093f\u0915 \u0906\u0935\u0930\u094d\u0924 \u0938\u093e\u0930\u0923\u0940 \u092e\u0947\u0902 \u0924\u0924\u094d\u0935\u094b\u0902 \u0915\u094b \u0938\u094d\u0925\u093e\u0928 \u0926\u0947\u0928\u0947 \u0915\u0947 \u0924\u0930\u0940\u0915\u094b\u0902 \u092e\u0947\u0902 \u0905\u0902\u0924\u0930 \u0938\u094d\u092a\u0937\u094d\u091f \u0915\u0940\u091c\u093f\u090f\u0964<\/p>\n<p>\u092a\u094d\u0930\u096610.<br \/>\n\u0911\u0915\u094d\u0938\u0940\u091c\u0928 \u0915\u0940 \u0905\u0928\u0941\u092a\u0938\u094d\u0925\u093f\u0924\u093f \u092e\u0947\u0902 \u0917\u094d\u0932\u0942\u0915\u094b\u091c\u093c \u0915\u093f\u0938 \u092a\u094d\u0930\u0915\u093e\u0930 \u0935\u093f\u0918\u091f\u093f\u0924 \u0939\u094b\u0924\u093e \u0939\u0948, \u0909\u0928 \u0935\u093f\u0927\u093f\u092f\u094b\u0902 \u0915\u0947 \u092c\u093e\u0930\u0947 \u092e\u0947\u0902 \u0932\u093f\u0916\u093f\u090f\u0964<br \/>\n\u0905\u0925\u0935\u093e<br \/>\n\u0927\u092e\u0928\u093f\u092f\u094b\u0902 \u0924\u0925\u093e \u0936\u093f\u0930\u093e\u0913\u0902 \u0915\u0947 \u092c\u0940\u091a \u0915\u094b\u0908 \u0924\u0940\u0928 \u0905\u0902\u0924\u0930 \u0932\u093f\u0916\u093f\u090f\u0964<\/p>\n<p>\u092a\u094d\u0930\u096611.<br \/>\n\u092e\u0947\u0902\u0921\u0932 \u0915\u0947 \u092a\u094d\u0930\u092f\u094b\u0917\u094b\u0902 \u0938\u0947 \u0915\u093f\u0938 \u092a\u094d\u0930\u0915\u093e\u0930 \u0938\u093f\u0926\u094d\u0927 \u0939\u094b\u0924\u093e \u0939\u0948 \u0915\u093f \u0932\u0915\u094d\u0937\u0923 \u092a\u094d\u0930\u092d\u093e\u0935\u0940 \u0905\u0925\u0935\u093e \u0905\u092a\u094d\u0930\u092d\u093e\u0935\u0940 \u0939\u094b\u0924\u0947 \u0939\u0948\u0902?<\/p>\n<p>\u092a\u094d\u0930\u096612.<br \/>\n\u0930\u094b\u0939\u093f\u0924 \u0928\u0947 \u090f\u0915 \u0909\u0924\u094d\u0924\u0932 \u0932\u0947\u0902\u0938 \u0915\u093e \u0909\u092a\u092f\u094b\u0917 \u0915\u0930\u0924\u0947 \u0939\u0941\u090f \u090f\u0915 \u092e\u094b\u092e\u092c\u0924\u094d\u0924\u0940 \u0915\u0940 \u091c\u094d\u0935\u093e\u0932\u093e \u0915\u094b \u090f\u0915 \u0938\u092b\u0947\u0926 \u092a\u0930\u094d\u0926\u0947 \u092a\u0930 \u092b\u094b\u0915\u0938\u093f\u0924 \u0915\u093f\u092f\u093e\u0964 \u0909\u0938\u0928\u0947 \u0928\u093f\u092e\u094d\u0928\u0932\u093f\u0916\u093f\u0924 \u092a\u0920\u0928\u094b\u0902 \u0915\u094b \u0905\u0902\u0915\u093f\u0924 \u0915\u093f\u092f\u093e :<br \/>\n\u092e\u094b\u092e\u092c\u0924\u094d\u0924\u0940 \u0915\u0940 \u0938\u094d\u0925\u093f\u0924\u093f = 26.0 cm<br \/>\n\u0909\u0924\u094d\u0924\u0932 \u0932\u0947\u0902\u0938 \u0915\u0940 \u0938\u094d\u0925\u093f\u0924\u093f = 50.0 cm<br \/>\n\u092a\u0930\u094d\u0926\u0947 \u0915\u0940 \u0938\u094d\u0925\u093f\u0924\u093f = 74.0 cm<br \/>\n\u0905\u092c \u0928\u093f\u092e\u094d\u0928\u0932\u093f\u0916\u093f\u0924 \u0915\u094b \u0909\u0924\u094d\u0924\u0930 \u0926\u0940\u091c\u093f\u090f :<br \/>\n(i) \u0909\u0924\u094d\u0924\u0932 \u0932\u0947\u0902\u0938 \u0915\u0940 \u092b\u094b\u0915\u0938 \u0926\u0942\u0930\u0940 \u091c\u094d\u091e\u093e\u0924 \u0915\u0940\u091c\u093f\u090f\u0964<br \/>\n(ii) \u092f\u0926\u093f \u0930\u094b\u0939\u093f\u0924 \u0905\u092c \u092e\u094b\u092e\u092c\u0924\u094d\u0924\u0940 \u0915\u094b 38 cm \u092a\u0930 \u0930\u0916\u0924\u093e \u0939\u0948 \u0924\u094b \u0909\u0938\u0915\u093e \u092a\u094d\u0930\u0924\u093f\u092c\u093f\u092e\u094d\u092c \u0915\u0939\u093e\u0901 \u092a\u0930 \u092c\u0928\u0947\u0917\u093e?<br \/>\n(iii) \u090a\u092a\u0930 \u0915\u0940 (ii) \u0938\u094d\u0925\u093f\u0924\u093f \u0915\u0947 \u0932\u093f\u090f \u092a\u094d\u0930\u0924\u093f\u092c\u093f\u092e\u094d\u092c \u0915\u0947 \u092c\u0928\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0915\u093f\u0930\u0923 \u0906\u0930\u0947\u0916 \u092c\u0928\u093e\u0907\u090f\u0964<\/p>\n<p>\u092a\u094d\u0930\u096613.<br \/>\n&#8220;pH \u0915\u093e \u0939\u092e\u093e\u0930\u0947 \u091c\u0940\u0935\u0928 \u092e\u0947\u0902 \u0915\u093e\u092b\u0940 \u092e\u0939\u0924\u094d\u0924\u094d\u0935 \u0939\u0948&#8221;, \u0907\u0938\u0915\u093e \u0935\u0930\u094d\u0923\u0928 \u0924\u0940\u0928 \u0909\u0926\u093e\u0939\u0930\u0923 \u0926\u0947\u0924\u0947 \u0939\u0941\u090f \u0915\u0940\u091c\u093f\u090f\u0964<br \/>\n\u0905\u0925\u0935\u093e<br \/>\n\u091c\u093f\u092a\u094d\u0938\u092e \u0938\u0947 \u090f\u0915 \u092f\u094c\u0917\u093f\u0915 \u0915\u094b \u092c\u0928\u093e\u092f\u093e \u091c\u093e\u0924\u093e \u0939\u0948\u0964 \u092f\u0939 \u092f\u094c\u0917\u093f\u0915 \u092a\u093e\u0928\u0940 \u0915\u0940 \u0909\u091a\u093f\u0924 \u092e\u093e\u0924\u094d\u0930\u093e \u0915\u094b \u0938\u093e\u0925 \u092e\u093f\u0932\u093e\u0928\u0947 \u092a\u0930 \u0915\u0920\u094b\u0930 \u0939\u094b \u091c\u093e\u0924\u093e \u0939\u0948\u0964 \u0907\u0938 \u092f\u094c\u0917\u093f\u0915 \u0915\u094b \u092a\u0939\u091a\u093e\u0928\u093f\u090f \u090f\u0935\u0902 \u0907\u0938\u0915\u093e \u0930\u093e\u0938\u093e\u092f\u0928\u093f\u0915 \u0938\u0942\u0924\u094d\u0930 \u0932\u093f\u0916\u093f\u090f\u0964 \u0907\u0938\u0947 \u092c\u0928\u093e\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0938\u092e\u0940\u0915\u0930\u0923 \u0932\u093f\u0916\u093f\u090f\u0964 \u0907\u0938 \u092f\u094c\u0917\u093f\u0915 \u0915\u093e \u090f\u0915 \u0909\u092a\u092f\u094b\u0917 \u092d\u0940 \u0932\u093f\u0916\u093f\u090f\u0964<\/p>\n<p>\u092a\u094d\u0930\u096614.<br \/>\n\u091c\u0948\u0935 \u0935\u093f\u0915\u093e\u0938 \u0915\u0947 \u0905\u0927\u094d\u092f\u092f\u0928 \u0915\u0947 \u0932\u093f\u090f \u091c\u0940\u0935\u093e\u0936\u094d\u092e\u094b\u0902 \u0915\u093e \u091c\u094d\u091e\u093e\u0928 \u0915\u094d\u092f\u094b\u0902 \u092e\u0939\u0924\u094d\u0924\u094d\u0935\u092a\u0942\u0930\u094d\u0923 \u0939\u0948? \u0909\u0928 \u0926\u094b \u0935\u093f\u0927\u093f\u092f\u094b\u0902 \u0915\u093e \u0935\u0930\u094d\u0923\u0928 \u0915\u0940\u091c\u093f\u090f \u091c\u093f\u0928\u0938\u0947 \u091c\u0940\u0935\u093e\u0936\u094d\u092e\u094b\u0902 \u0915\u0940 \u0906\u092f\u0941 \u0915\u093e \u0905\u0928\u0941\u092e\u093e\u0928 \u0932\u0917\u093e\u092f\u093e \u091c\u093e \u0938\u0915\u0924\u093e \u0939\u0948\u0964<\/p>\n<p>\u092a\u094d\u0930\u096615.<br \/>\nAIDS \u0915\u0947 \u0935\u093f\u0937\u092f \u092e\u0947\u0902 \u0932\u094b\u0917\u094b\u0902 \u0915\u094b \u091c\u093e\u0928\u0915\u093e\u0930\u0940 \u0926\u0947\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0939\u092e\u093e\u0930\u0940 \u0938\u0930\u0915\u093e\u0930 \u0938\u092e\u092f-\u0938\u092e\u092f \u092a\u0930 \u092a\u094b\u0938\u094d\u091f\u0930\u094b\u0902 \u0926\u094d\u0935\u093e\u0930\u093e, \u0930\u0947\u0921\u093f\u092f\u094b \u0915\u093e\u0930\u094d\u092f\u0915\u094d\u0930\u092e\u094b\u0902 \u0926\u094d\u0935\u093e\u0930\u093e \u0924\u0925\u093e \u0905\u0928\u094d\u092f \u092a\u094d\u0930\u0915\u093e\u0930 \u0915\u0947 \u0935\u093f\u091c\u094d\u091e\u093e\u092a\u0928\u094b\u0902 \u0926\u094d\u0935\u093e\u0930\u093e \u0907\u0938\u0938\u0947 \u092c\u091a\u0928\u0947 \u0915\u0947 \u0909\u092a\u093e\u092f \u0924\u0925\u093e \u0909\u092a\u091a\u093e\u0930 \u0915\u0947 \u0935\u093f\u0937\u092f \u092e\u0947\u0902 \u092c\u0924\u093e\u0924\u0940 \u0930\u0939\u0924\u0940 \u0939\u0948\u0964<br \/>\n(a) AIDS \u0915\u093f\u0938 \u092a\u094d\u0930\u0915\u093e\u0930 \u0915\u093e \u0930\u094b\u0917 \u0939\u0948? \u0907\u0938 \u0930\u094b\u0917 \u0915\u0947 \u0915\u093e\u0930\u0915 \u0915\u093e \u0928\u093e\u092e \u0932\u093f\u0916\u093f\u090f\u0964<br \/>\n(b) \u0939\u092e\u093e\u0930\u0940 \u0938\u0930\u0915\u093e\u0930 \u090a\u092a\u0930\u0932\u093f\u0916\u093f\u0924 \u0915\u093e\u0930\u094d\u092f\u0915\u094d\u0930\u092e\u094b\u0902 \u0926\u094d\u0935\u093e\u0930\u093e AIDS \u0915\u0947 \u0935\u093f\u0937\u092f \u092e\u0947\u0902 \u0932\u094b\u0917\u094b\u0902 \u092e\u0947\u0902 \u0915\u093f\u0938 \u092a\u094d\u0930\u0915\u093e\u0930 \u0915\u0940 \u091c\u093e\u0917\u0930\u0942\u0915\u0924\u093e \u0935\u093f\u0915\u0938\u093f\u0924 \u0915\u0930\u0928\u093e \u091a\u093e\u0939\u0924\u0940 \u0939\u0948?<\/p>\n<p>\u092a\u094d\u0930\u096616.<br \/>\n\u090f\u0915 \u0932\u0902\u092c\u0947 \u0938\u0940\u0927\u0947 \u091a\u093e\u0932\u0915 \u0924\u093e\u0930 \u092e\u0947\u0902 \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u0927\u093e\u0930\u093e \u092a\u094d\u0930\u0935\u093e\u0939\u093f\u0924 \u0939\u094b\u0928\u0947 \u092a\u0930 \u0909\u0938\u0915\u0947 \u091a\u093e\u0930\u094b\u0902 \u0924\u0930\u092b \u0915\u093f\u0938 \u092a\u094d\u0930\u0915\u093e\u0930 \u0915\u093e \u091a\u0941\u0902\u092c\u0915\u0940\u092f \u0915\u094d\u0937\u0947\u0924\u094d\u0930 \u0909\u0924\u094d\u092a\u093e\u0926\u093f\u0924 \u0939\u094b\u0924\u093e \u0939\u0948, \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u092a\u0930\u093f\u092a\u0925 \u0915\u0947 \u0928\u093e\u092e\u093e\u0902\u0915\u093f\u0924 \u091a\u093f\u0924\u094d\u0930 \u0926\u094d\u0935\u093e\u0930\u093e \u090f\u0915 \u0915\u094d\u0930\u093f\u092f\u093e\u0915\u0932\u093e\u092a \u0926\u094d\u0935\u093e\u0930\u093e \u0907\u0938\u0915\u093e \u0935\u0930\u094d\u0923\u0928 \u0915\u0930\u0947\u0902\u0964<br \/>\n(i) \u0909\u0938 \u0928\u093f\u092f\u092e \u0915\u093e \u0928\u093e\u092e \u0932\u093f\u0916\u093f\u090f \u091c\u094b \u0907\u0938 \u092a\u094d\u0930\u0915\u093e\u0930 \u0915\u0947 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\u0909\u0928\u094d\u0928\u0924\u093f \u0915\u0947 \u0915\u093e\u0930\u0923 \u092c\u0939\u0941\u0924 \u092e\u093e\u0924\u094d\u0930\u093e \u092e\u0947\u0902 \u0915\u091a\u0930\u0947 \u0915\u093e \u0909\u0924\u094d\u092a\u093e\u0926\u0928 \u0939\u094b \u0930\u0939\u093e \u0939\u0948\u0964\u201d \u0907\u0938 \u0915\u0925\u0928 \u0915\u0947 \u092a\u0915\u094d\u0937 \u092e\u0947\u0902 \u0926\u094b \u0909\u0926\u093e\u0939\u0930\u0923 \u0926\u0940\u091c\u093f\u090f\u0964 \u090f\u0915 \u0910\u0938\u0947 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0915\u0947 \u0935\u093f\u0937\u092f \u092e\u0947\u0902 \u0932\u093f\u0916\u093f\u090f \u091c\u094b \u0939\u092e \u0905\u092a\u0928\u0940 \u091c\u0940\u0935\u0928\u0936\u0948\u0932\u0940 \u092e\u0947\u0902 \u0905\u092a\u0928\u093e\u092f\u0947\u0902 \u091c\u093f\u0938\u0938\u0947 \u0905\u0928\u093f\u092e\u094d\u0928\u0940\u0915\u0930\u0923 \u0935\u093e\u0932\u0947 \u0915\u091a\u0930\u0947 \u0915\u0940 \u092e\u093e\u0924\u094d\u0930\u093e \u0915\u092e \u0939\u094b \u0938\u0915\u0947\u0964<br \/>\n(b) \u0928\u093f\u092e\u094d\u0928\u0932\u093f\u0916\u093f\u0924 \u091c\u0940\u0935 \u090f\u0915 \u0916\u093e\u0926\u094d\u092f \u0936\u094d\u0930\u0943\u0902\u0916\u0932\u093e \u092c\u0928\u093e\u0924\u0947 \u0939\u0948\u0902 :<br \/>\n\u0915\u0940\u0921\u093c\u093e, \u092c\u093e\u091c, \u0918\u093e\u0938, \u0938\u093e\u0902\u092a, \u092e\u0947\u0902\u0922\u0915<br \/>\n\u0907\u0928\u092e\u0947\u0902 \u0938\u0947 \u0915\u093f\u0938 \u091c\u0940\u0935 \u092e\u0947\u0902 \u0938\u092c\u0938\u0947 \u0905\u0927\u093f\u0915 \u092e\u093e\u0924\u094d\u0930\u093e \u092e\u0947\u0902 \u0905\u0928\u093f\u092e\u094d\u0928\u0940\u0915\u0930\u0923\u0940\u092f \u0930\u0938\u093e\u092f\u0928 \u092a\u093e\u090f \u091c\u093e\u090f\u0902\u0917\u0947\u0964 \u0907\u0938 \u092a\u094d\u0930\u0915\u0943\u092e \u0915\u093e \u0928\u093e\u092e \u0932\u093f\u0916\u093f\u090f\u0964<br \/>\n\u0905\u0925\u0935\u093e<br \/>\n(a) \u2018\u091c\u0932\u0947 \u0938\u0902\u092d\u0930 \u092a\u094d\u0930\u092c\u0902\u0927\u0928&#8217; \u0938\u0947 \u0906\u092a \u0915\u094d\u092f\u093e \u0938\u092e\u091d\u0924\u0947 \u0939\u0948\u0902? \u0907\u0938\u0915\u0947 \u0915\u094b\u0908 \u0926\u094b \u0932\u093e\u092d \u0932\u093f\u0916\u093f\u090f\u0964<br \/>\n(b) \u201c\u092e\u0928\u0941\u0937\u094d\u092f \u0915\u093f\u0938\u0940 \u0916\u093e\u0926\u094d\u092f \u0936\u094d\u0930\u0943\u0902\u0916\u0932\u093e \u092e\u0947\u0902 \u0938\u092c\u0938\u0947 \u0905\u0927\u093f\u0915 \u092a\u094b\u0937\u0940 \u0938\u094d\u0924\u0930 \u092a\u0930 \u0939\u0948\u0964&#8217; \u0907\u0938\u0915\u093e \u0939\u092e\u093e\u0930\u0947 \u0936\u0930\u0940\u0930 \u092a\u0930 \u0915\u094d\u092f\u093e \u092a\u094d\u0930\u092d\u093e\u0935 \u092a\u0921\u093c\u0947\u0917\u093e?<\/p>\n<p style=\"text-align: center;\"><strong>SECTION B<\/strong><\/p>\n<p>\u092a\u094d\u0930\u096622.<br \/>\n\u0906\u092a \u0928\u093f\u092e\u094d\u0928\u0932\u093f\u0916\u093f\u0924 \u092a\u0930\u0916\u0928\u0932\u093f\u092f\u094b\u0902 \u092e\u0947\u0902 \u092c\u093e\u0930\u0940-\u092c\u093e\u0930\u0940 \u0938\u0947 \u090f\u0938\u093f\u091f\u093f\u0915 \u0905\u092e\u094d\u0932 \u0915\u0940 \u0915\u0941\u091b \u092c\u0942\u0902\u0926\u0947\u0902 \u0921\u093e\u0932\u0928\u0947 \u092a\u0930 \u0915\u094d\u092f\u093e \u092a\u094d\u0930\u0947\u0915\u094d\u0937\u0923 \u0915\u0930\u0947\u0902\u0917\u0947?<br \/>\n(a) \u092b\u093f\u0928\u0949\u0932\u092b\u094d\u0925\u0947\u0932\u0940\u0928<br \/>\n(b) \u0938\u093e\u0930\u094d\u0935\u0924\u094d\u0930\u093f\u0915 \u0938\u0942\u091a\u0915<br \/>\n(c) \u0906\u0938\u0941\u0924 \u091c\u0932<br \/>\n(d) \u0938\u094b\u0921\u093f\u092f\u092e \u0939\u093e\u0907\u0921\u094d\u0930\u094b\u091c\u0928 \u0915\u093e\u0930\u094d\u092c\u094b\u0928\u0947\u091f<\/p>\n<p>\u092a\u094d\u0930\u096623.<br \/>\n\u0938\u093e\u092c\u0941\u0928 \u0915\u0947 \u0918\u094b\u0932 \u0938\u0947 \u0915\u093f\u0924\u0928\u0940 \u092e\u093e\u0924\u094d\u0930\u093e \u092e\u0947\u0902 \u091d\u093e\u0917 \u092c\u0928\u0924\u0940 \u0939\u0948, \u0907\u0938\u0915\u0947 \u0932\u093f\u090f \u0930\u093f\u092f\u093e \u0928\u0947 \u0926\u094b \u092a\u094d\u0930\u092f\u094b\u0917 \u0915\u093f\u090f\u0964 \u092f\u0947 \u092a\u094d\u0930\u092f\u094b\u0917 \u0939\u0948\u0902 :<br \/>\n\u092a\u094d\u0930\u092f\u094b\u0917 I: \u0930\u093f\u092f\u093e \u0928\u0947 \u090f\u0915 \u092a\u0930\u0916\u0928\u0932\u0940 &#8220;A&#8221; \u092e\u0947\u0902 10 \u092e\u093f\u0932\u0940 \u0906\u0938\u0941\u0924 \u091c\u0932 \u0932\u093f\u092f\u093e \u0924\u0925\u093e \u0909\u0938\u092e\u0947\u0902 5-6 \u092c\u0942\u0902\u0926\u0947\u0902 \u0924\u0930\u0932 \u0938\u093e\u092c\u0941\u0928 \u0915\u0940 \u0921\u093e\u0932 \u0915\u0930, \u0909\u0938\u0947 \u0905\u091a\u094d\u091b\u0940 \u092a\u094d\u0930\u0915\u093e\u0930 \u0938\u0947 \u0939\u093f\u0932\u093e\u092f\u093e\u0964<br \/>\n\u092a\u094d\u0930\u092f\u094b\u0917 II: \u0909\u0938\u0928\u0947 \u090f\u0915 \u092a\u0930\u0916\u0928\u0932\u0940 &#8220;A&#8221; \u092e\u0947\u0902 10 \u092e\u093f\u0932\u0940 \u0906\u0938\u0941\u0924 \u091c\u0932 \u0932\u0947\u0915\u0930 \u0909\u0938\u092e\u0947\u0902 5-6 \u092c\u0942\u0902\u0926\u0947\u0902 \u0924\u0930\u0932 \u0938\u093e\u092c\u0941\u0928 \u0915\u0940 \u0921\u093e\u0932\u0940\u0902 \u0924\u0925\u093e \u0909\u0938\u092e\u0947\u0902 \u0906\u0927\u093e \u091a\u092e\u094d\u092e\u091a CaSO<sub>4<\/sub> \u0921\u093e\u0932\u093e \u0924\u0925\u093e \u092a\u0930\u0916\u0928\u0932\u0940 \u0915\u094b \u0905\u091a\u094d\u091b\u0940 \u0924\u0930\u0939 \u0938\u0947 \u0939\u093f\u0932\u093e\u092f\u093e\u0964<br \/>\n\u0905\u092c \u0907\u0928 \u0926\u094b\u0928\u094b\u0902 \u092a\u0930\u0916\u0928\u0932\u093f\u092f\u094b\u0902 \u092e\u0947\u0902 \u0906\u092a \u0915\u094d\u092f\u093e \u092a\u094d\u0930\u0947\u0915\u094d\u0937\u0923 \u0915\u0930\u0947\u0902\u0917\u0947, \u0932\u093f\u0916\u093f\u090f\u0964<\/p>\n<p>\u092a\u094d\u0930\u096624.<br \/>\n\u090f\u0915 \u0935\u093f\u0926\u094d\u092f\u093e\u0930\u094d\u0925\u0940 \u0928\u0947 \u092f\u0940\u0938\u094d\u091f \u092e\u0947\u0902 \u0905\u0932\u0948\u0902\u0917\u093f\u0915 \u092a\u094d\u0930\u091c\u0928\u0928 \u0915\u094b \u0926\u093f\u0916\u093e\u0924\u0947 \u0939\u0941\u090f \u090f\u0915 \u0938\u094d\u0925\u093e\u0908 \u0938\u094d\u0932\u093e\u0907\u0921 \u0915\u094b \u0938\u0942\u0915\u094d\u0937\u094d\u092e\u0926\u0930\u094d\u0936\u0940 \u092e\u0947\u0902 \u0926\u0947\u0916\u093e\u0964 \u0909\u0938\u0928\u0947 \u0938\u094d\u0932\u093e\u0907\u0921 \u092e\u0947\u0902 \u091c\u094b \u092a\u094d\u0930\u0947\u0915\u094d\u0937\u0923 \u0926\u0947\u0916\u0947, \u0909\u0938\u0947 \u091a\u093f\u0924\u094d\u0930\u094b\u0902 \u0926\u094d\u0935\u093e\u0930\u093e \u0926\u093f\u0916\u093e\u090f\u0902 \u0924\u0925\u093e \u0907\u0938 \u092a\u094d\u0930\u091c\u0928\u0928 \u0935\u093f\u0927\u093f \u0915\u093e \u0928\u093e\u092e \u092d\u0940 \u0932\u093f\u0916\u093f\u090f\u0964<\/p>\n<p>\u092a\u094d\u0930\u096625.<br \/>\n\u0936\u094d\u0935\u0938\u0928 \u0915\u094d\u0930\u093f\u092f\u093e \u092e\u0947\u0902 CO<sub>2<\/sub> \u0917\u0948\u0938 \u0909\u0924\u094d\u092a\u093e\u0926\u093f\u0924 \u0939\u094b\u0924\u0940 \u0939\u0948, \u0907\u0938\u0915\u0947 \u0932\u093f\u090f \u090f\u0915 \u0935\u093f\u0926\u094d\u092f\u093e\u0930\u094d\u0925\u0940 \u0928\u0947 \u090f\u0915 \u092a\u094d\u0930\u092f\u094b\u0917 \u0915\u093f\u092f\u093e\u0964 \u0907\u0938 \u092a\u094d\u0930\u092f\u094b\u0917 \u0915\u094b \u0915\u0930\u0924\u0947 \u0939\u0941\u090f \u0915\u094c\u0928-\u0915\u094c\u0928 \u0938\u0940 \u0938\u093e\u0935\u0927\u093e\u0928\u093f\u092f\u093e\u0901 \u0905\u092a\u0928\u093e\u0928\u0940 \u091a\u093e\u0939\u093f\u090f\u0964 \u0915\u094b\u0908 \u0926\u094b \u0938\u093e\u0935\u0927\u093e\u0928\u093f\u092f\u093e\u0901 \u0932\u093f\u0916\u093f\u090f\u0964<\/p>\n<p>\u092a\u094d\u0930\u096626.<br \/>\n\u090f\u0915 \u092a\u094d\u0930\u0924\u093f\u0930\u094b\u0927\u0915 \u092e\u0947\u0902 \u092a\u094d\u0930\u0935\u093e\u0939\u093f\u0924 \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u0927\u093e\u0930\u093e I \u0924\u0925\u093e \u0909\u0938\u0915\u0947 \u0932\u093f\u090f \u0935\u093f\u092d\u093e\u0935\u0902\u0924\u0930 V \u0915\u0947 \u092e\u093e\u0928\u094b\u0902 \u0915\u094b \u0928\u0940\u091a\u0947 \u090f\u0915 \u0938\u093e\u0930\u0923\u0940 \u092e\u0947\u0902 \u0926\u0930\u094d\u0936\u093e\u092f\u093e \u0917\u092f\u093e \u0939\u0948\u0964<br \/>\n<img loading=\"lazy\" src=\"https:\/\/i1.wp.com\/farm8.staticflickr.com\/7833\/45785274944_c7955ca443_o.png?resize=541%2C60&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 26\" width=\"541\" height=\"60\" data-recalc-dims=\"1\" \/><br \/>\n\u0907\u0938 \u0906\u0927\u093e\u0930 \u092a\u0930 V \u0924\u0925\u093e I \u0915\u0947 \u092c\u0940\u091a \u090f\u0915 \u0917\u094d\u0930\u093e\u092b \u092c\u0928\u093e\u0907\u090f \u0924\u0925\u093e \u0909\u0938\u0938\u0947 \u092a\u094d\u0930\u0924\u093f\u0930\u094b\u0927\u0915 \u0915\u093e \u092a\u094d\u0930\u0924\u093f\u0930\u094b\u0927 \u091c\u094d\u091e\u093e\u0924 \u0915\u0940\u091c\u093f\u090f\u0964<br \/>\n\u0905\u0925\u0935\u093e<br \/>\n\u0913\u092e \u0915\u0947 \u0928\u093f\u092f\u092e \u0915\u094b \u0938\u0924\u094d\u092f\u093e\u092a\u093f\u0924 \u0915\u0930\u0928\u0947 \u0935\u093e\u0932\u0947 \u092a\u094d\u0930\u092f\u094b\u0917 \u092e\u0947\u0902 \u090f\u0915 \u0935\u093f\u0926\u094d\u092f\u093e\u0930\u094d\u0925\u0940 \u0910\u092e\u0940\u091f\u0930 \u0915\u0940 \u0938\u0941\u0908 \u0915\u094b 17 \u0915\u0947 \u0928\u093f\u0936\u093e\u0928 \u092a\u0930 \u092a\u093e\u0924\u093e \u0939\u0948\u0964 \u092f\u0926\u093f \u0910\u092e\u0940\u091f\u0930 \u092e\u0947\u0902 10 \u092d\u093e\u0917\u094b\u0902 \u0915\u0947 \u092c\u0940\u091a 0 \u0938\u0947 0.5 A \u0915\u093e \u092e\u093e\u0928 \u0939\u094b \u0924\u094b 17 \u092d\u093e\u0917\u094b\u0902 \u0915\u0947 \u092c\u0930\u093e\u092c\u0930 \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u0927\u093e\u0930\u093e \u0915\u0940 \u092e\u093e\u0924\u094d\u0930\u093e \u0915\u094d\u092f\u093e \u0939\u094b\u0917\u0940?<\/p>\n<p>\u092a\u094d\u0930\u096627.<br \/>\n\u090f\u0915 \u092a\u094d\u0930\u093f\u091c\u094d\u092e \u092e\u0947\u0902 \u0938\u0947 \u090f\u0915 \u092a\u094d\u0930\u0915\u093e\u0936 \u0915\u0940 \u0915\u093f\u0930\u0923 \u0915\u094b \u091c\u093e\u0924\u0947 \u0939\u0941\u090f \u0926\u093f\u0916\u093e\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u090f\u0915 \u0915\u093f\u0930\u0923 \u0906\u0930\u0947\u0916 \u092c\u0928\u093e\u0907\u090f \u0924\u0925\u093e \u0909\u0938\u092e\u0947\u0902 \u0906\u092a\u0924\u0928 \u0915\u094b\u0923 \u0935 \u0935\u093f\u091a\u0932\u0928 \u0915\u094b\u0923 \u0915\u094b \u0928\u093e\u092e\u093e\u0902\u0915\u093f\u0924 \u0915\u0940\u091c\u093f\u090f\u0964<\/p>\n<p style=\"text-align: center;\"><strong>Answers<\/strong><\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 1-<br \/>\n\u0910\u0938\u0947 \u092a\u0941\u0937\u094d\u092a \u0909\u092d\u092f\u0932\u093f\u0902\u0917\u0940 \u092a\u0941\u0937\u094d\u092a \u0915\u0939\u0932\u093e\u0924\u0947 \u0939\u0948\u0902\u0964<br \/>\n\u0909\u0926\u093e\u0939\u0930\u0923 : \u0938\u0930\u0938\u094b\u0902 \u0915\u0947 \u092a\u0941\u0937\u094d\u092a, \u0917\u0941\u0921\u093c\u0939\u0932 (Hibiscus) \u0915\u0947 \u092a\u0941\u0937\u094d\u092a \u0906\u0926\u093f\u0964<\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 2-<br \/>\n<img loading=\"lazy\" src=\"https:\/\/i1.wp.com\/farm5.staticflickr.com\/4877\/32636239058_081503e25c_o.png?resize=683%2C84&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 2\" width=\"683\" height=\"84\" data-recalc-dims=\"1\" \/><\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 3-<br \/>\n\u0924\u0924\u094d\u0935 X \u0915\u0940 \u092a\u0930\u092e\u093e\u0923\u0941 \u0938\u0902\u0916\u094d\u092f\u093e = (35 &#8211; 18) = 17<br \/>\n\u2234 \u0907\u0938\u0915\u093e \u0907\u0932\u0947\u0915\u094d\u091f\u094d\u0930\u0949\u0928\u093f\u0915 \u0935\u093f\u0928\u094d\u092f\u093e\u0938 = 2, 8, 7<br \/>\n\u2234 \u0907\u0938 \u0924\u0924\u094d\u0935 \u0915\u0940 \u0938\u092e\u0942\u0939 \u0938\u0902\u0916\u094d\u092f\u093e 17 \u0939\u0948 \u0915\u094d\u092f\u094b\u0902\u0915\u093f \u0907\u0938\u0915\u0947 \u0938\u092c\u0938\u0947 \u092c\u093e\u0939\u0930\u0940 \u0915\u0915\u094d\u0937 \u092e\u0947\u0902 7 \u0907\u0932\u0947\u0915\u094d\u091f\u094d\u0930\u0949\u0928 \u0939\u0948\u0902\u0964 \u0907\u0938\u0915\u0940 \u0906\u0935\u0930\u094d\u0924 \u0938\u0902\u0916\u094d\u092f\u093e 3 \u0939\u0948, \u0915\u094d\u092f\u094b\u0902\u0915\u093f \u0907\u0938\u0915\u0947 \u0924\u0940\u0928 \u0915\u0915\u094d\u0937 \u0939\u0948\u0902\u0964<\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 4-<br \/>\nh1 = 1.2 m; f = -20 cm (\u0905\u0935\u0924\u0932 \u0926\u0930\u094d\u092a\u0923); v = -60 cm;<br \/>\nu = ? h2 = ?<br \/>\n<img loading=\"lazy\" src=\"https:\/\/i0.wp.com\/farm5.staticflickr.com\/4856\/46457229292_04b10c6f0e_o.png?resize=530%2C223&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 4\" width=\"530\" height=\"223\" data-recalc-dims=\"1\" \/><br \/>\n\u092a\u094d\u0930\u0924\u093f\u092c\u093f\u092e\u094d\u092c \u0915\u0940 \u090a\u0901\u091a\u093e\u0908 -2.4 m \u0939\u0948, \u090b\u0923\u093e\u0924\u094d\u092e\u0915 \u091a\u093f\u0928\u094d\u0939 \u0926\u0930\u094d\u0936\u093e\u0924\u093e \u0939\u0948 \u0915\u093f \u092a\u094d\u0930\u0924\u093f\u092c\u093f\u092e\u094d\u092c \u0935\u093e\u0938\u094d\u0924\u0935\u093f\u0915 \u0935 \u0909\u0932\u091f\u093e \u092c\u0928\u093e \u0939\u0948\u0964\u0964<\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 5-<br \/>\n\u0917\u0948\u0930-\u092a\u0930\u092e\u094d\u092a\u0930\u093e\u0917\u0924 \u090a\u0930\u094d\u091c\u093e \u0938\u094d\u0930\u094b\u0924\u094b\u0902 \u0915\u0947 \u0926\u094b\u0939\u0928 \u0915\u0947 \u092e\u0941\u0916\u094d\u092f \u0915\u093e\u0930\u0923\u0903<br \/>\n(i) \u092e\u0928\u0941\u0937\u094d\u092f \u0915\u0940 \u091c\u0928\u0938\u0902\u0916\u094d\u092f\u093e \u0935\u0943\u0926\u094d\u0927\u093f \u0915\u0947 \u0915\u093e\u0930\u0923 \u0924\u0925\u093e \u0906\u0927\u0941\u0928\u093f\u0915 \u091c\u0940\u0935\u0928 \u0936\u0948\u0932\u0940 \u0915\u0947 \u0915\u093e\u0930\u0923, \u090a\u0930\u094d\u091c\u093e \u0915\u0940 \u092e\u093e\u0902\u0917 \u0915\u093e\u092b\u0940 \u092c\u0922\u093c\u0924\u0940 \u091c\u093e \u0930\u0939\u0940 \u0939\u0948\u0964<br \/>\n(ii) \u091c\u0940\u0935\u093e\u0936\u094d\u092e \u0908\u0902\u0927\u0928\u094b\u0902 \u0915\u0940 \u092e\u093e\u0924\u094d\u0930\u093e \u0915\u093e\u092b\u0940 \u0924\u0947\u091c\u093c\u0940 \u0938\u0947 \u092a\u0943\u0925\u094d\u0935\u0940 \u092a\u0930 \u0918\u091f\u0924\u0940 \u091c\u093e \u0930\u0939\u0940 \u0939\u0948\u0964<\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 6-<br \/>\n<img loading=\"lazy\" src=\"https:\/\/i1.wp.com\/farm5.staticflickr.com\/4838\/32636238668_0f0cc1e72e_o.png?resize=268%2C224&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 6\" width=\"268\" height=\"224\" data-recalc-dims=\"1\" \/><br \/>\n\u091c\u094b \u0938\u0902\u092f\u0902\u0924\u094d\u0930 \u092f\u093e\u0902\u0924\u094d\u0930\u093f\u0915 \u090a\u0930\u094d\u091c\u093e \u0915\u094b \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u090a\u0930\u094d\u091c\u093e \u092e\u0947\u0902 \u0930\u0942\u092a\u093e\u0902\u0924\u0930\u093f\u0924 \u0915\u0930\u0924\u093e \u0939\u0948 \u0935\u0939 \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u091c\u0928\u093f\u0924\u094d\u0930 (Electric Generator) \u0915\u0939\u0932\u093e\u0924\u093e \u0939\u0948\u0964<br \/>\n\u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u091c\u0928\u093f\u0924\u094d\u0930 \u0915\u0940 \u0915\u093e\u0930\u094d\u092f\u0935\u093f\u0927\u093f \u0915\u093e \u0938\u093f\u0926\u094d\u0927\u093e\u0902\u0924-\u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u091c\u0928\u093f\u0924\u094d\u0930 \u0915\u093e \u0915\u093e\u0930\u094d\u092f \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u091a\u0941\u092e\u094d\u092c\u0915 \u092a\u094d\u0930\u0947\u0930\u0923 \u092a\u0930 \u0906\u0927\u093e\u0930\u093f\u0924 \u0939\u0948 \u0924\u0925\u093e \u0907\u0938\u0947 \u092b\u094d\u0932\u0947\u092e\u093f\u0902\u0917 \u0915\u0947 \u0926\u0915\u094d\u0937\u093f\u0923-\u0939\u0938\u094d\u0924 (\u0926\u093e\u0901\u092f\u093e \u0939\u093e\u0925) \u0928\u093f\u092f\u092e \u0915\u0947 \u0906\u0927\u093e\u0930 \u092a\u0930 \u0938\u092e\u091d\u093e \u091c\u093e \u0938\u0915\u0924\u093e \u0939\u0948\u0964 \u091c\u092c \u090f\u0915 \u0935\u093f\u0926\u094d\u092f\u0941\u0924\u0930\u094b\u0927\u0940 \u0924\u093e\u0930 \u0915\u094b \u090f\u0915 \u091a\u0941\u0902\u092c\u0915 \u0915\u0947 \u091a\u0941\u0902\u092c\u0915\u0940\u092f \u0915\u094d\u0937\u0947\u0924\u094d\u0930 \u092e\u0947\u0902 \u0918\u0941\u092e\u093e\u092f\u093e \u091c\u093e\u0924\u093e \u0939\u0948 \u0924\u094b \u091a\u0941\u0902\u092c\u0915\u0940\u092f \u0915\u094d\u0937\u0947\u0924\u094d\u0930 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u093f\u0924 \u0939\u094b \u091c\u093e\u0924\u093e \u0939\u0948\u0964 \u0907\u0938 \u0915\u093e\u0930\u0923 \u0935\u093f\u0926\u094d\u092f\u0941\u0924\u0930\u094b\u0927\u0940 \u0924\u093e\u0930 \u092e\u0947\u0902 \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u092a\u094d\u0930\u0935\u093e\u0939 \u092a\u094d\u0930\u0947\u0930\u093f\u0924 \u0939\u094b\u0924\u093e \u0939\u0948\u0964<br \/>\n\u0905\u0925\u0935\u093e<br \/>\n(i) \u0935\u0948\u0926\u094d\u092f\u0941\u0924 \u0909\u092a\u0915\u0930\u0923\u094b\u0902 \u092e\u0947\u0902 \u092d\u0942\u0938\u0902\u092a\u0930\u094d\u0915 \u0924\u093e\u0930 \u0915\u093e \u0915\u093e\u0930\u094d\u092f- \u092d\u0942\u0938\u0902\u092a\u0930\u094d\u0915 \u0924\u093e\u0930 \u090f\u0915 \u0938\u0941\u0930\u0915\u094d\u0937\u093e \u0935\u094d\u092f\u0935\u0938\u094d\u0925\u093e \u0939\u0948 \u091c\u093f\u0938\u0947 \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u092a\u0930\u093f\u092a\u0925 \u092e\u0947\u0902 \u092a\u094d\u0930\u092f\u094b\u0917 \u0915\u093f\u092f\u093e \u091c\u093e\u0924\u093e \u0939\u0948\u0964 \u091c\u092c \u0909\u092a\u0915\u0930\u0923 \u092e\u0947\u0902 \u0915\u093f\u0938\u0940 \u0924\u094d\u0930\u0941\u091f\u093f \u0915\u0947 \u0915\u093e\u0930\u0923 \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u0927\u093e\u0930\u093e \u0915\u093e \u0930\u093f\u0938\u093e\u0935 \u0939\u094b\u0928\u0947 \u0932\u0917\u0924\u093e \u0939\u0948\u0964 \u0924\u094b \u092f\u0939 \u0924\u093e\u0930 \u0915\u093e\u092b\u0940 \u0905\u0927\u093f\u0915 \u092e\u093e\u0924\u094d\u0930\u093e \u0915\u0940 \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u0927\u093e\u0930\u093e \u0915\u094b \u092d\u0942\u092e\u093f \u092e\u0947\u0902 \u0932\u0947 \u091c\u093e\u0924\u0940 \u0939\u0948 \u0924\u0925\u093e \u0910\u0938\u0947 \u0909\u092a\u0915\u0930\u0923 \u0915\u094b \u091b\u0942\u0928\u0947 \u092a\u0930 \u0939\u092e \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u0906\u0918\u093e\u0924 \u0938\u0947 \u092c\u091a \u091c\u093e\u0924\u0947 \u0939\u0948\u0902\u0964<br \/>\n(ii) \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u092a\u094d\u0930\u0935\u093e\u0939 \u092e\u0947\u0902 \u0932\u0918\u0941\u092a\u0925\u0928 \u0915\u093e \u0905\u0930\u094d\u0925-\u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u092a\u094d\u0930\u0935\u093e\u0939 \u0915\u0947 \u0938\u092e\u092f \u092f\u0926\u093f \u0935\u093f\u0926\u094d\u092f\u0941\u0928\u094d\u092e\u092f \u0924\u093e\u0930, \u0909\u0926\u093e\u0938\u0940\u0928 \u0924\u093e\u0930 \u0915\u094b \u092a\u0930\u093f\u092a\u0925 \u0915\u0947 \u092c\u0940\u091a \u092e\u0947\u0902 \u0939\u0940 \u0938\u0902\u092a\u0930\u094d\u0915 \u0915\u0930 \u0932\u0947 \u0924\u094b \u0909\u0938\u0947 \u0932\u0918\u0941\u092a\u0925\u0928 \u0915\u0939\u0924\u0947 \u0939\u0948\u0902\u0964 \u0907\u0938\u0938\u0947 \u092a\u0930\u093f\u092a\u0925 \u092e\u0947\u0902 \u0915\u093e\u092b\u0940 \u0905\u0927\u093f\u0915 \u092e\u093e\u0924\u094d\u0930\u093e \u092e\u0947\u0902 \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u092a\u094d\u0930\u0935\u093e\u0939\u093f\u0924 \u0939\u094b\u0928\u0947 \u0932\u0917\u0924\u0940 \u0939\u0948 \u091c\u093f\u0938\u0915\u0947 \u0915\u093e\u0930\u0923 \u0906\u0917 \u092d\u0940 \u0932\u0917 \u0938\u0915\u0924\u0940 \u0939\u0948\u0964<br \/>\n(iii) (a) 5A \u0915\u093e\u0964\u0964<br \/>\n(b) 15A \u0915\u094b\u0964\u0964<\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 7-<br \/>\n\u0939\u092e\u0947\u0902 \u091c\u094d\u091e\u093e\u0924 \u0939\u0948, P = I\u00b2R;<br \/>\nP = 16 \u0935\u093e\u091f<br \/>\n<img loading=\"lazy\" src=\"https:\/\/i2.wp.com\/farm5.staticflickr.com\/4835\/46457228752_ba73583aa2_o.png?resize=675%2C152&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 7\" width=\"675\" height=\"152\" data-recalc-dims=\"1\" \/><\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 8-<br \/>\n(a) \u0915\u0948\u0925\u094b\u0921 \u092a\u0930 \u0939\u093e\u0907\u0921\u094d\u0930\u094b\u091c\u0928 H<sub>2<\/sub> \u0935 \u090f\u0928\u094b\u0921 \u092a\u0930 \u0911\u0915\u094d\u0938\u0940\u091c\u0928 O<sub>2<\/sub> \u0917\u0948\u0938 \u090f\u0915\u0924\u094d\u0930 \u0939\u094b\u0917\u0940\u0964<br \/>\n(b) \u0915\u0948\u0925\u094b\u0921 \u092a\u0930 \u0939\u093e\u0907\u0921\u094d\u0930\u094b\u091c\u0928 \u0917\u0948\u0938 \u0915\u093e \u0906\u092f\u0924\u0928 \u090f\u0928\u094b\u0921 \u092a\u0930 \u0911\u0915\u094d\u0938\u0940\u091c\u0928 \u0917\u0948\u0938 \u0915\u0947 \u0906\u092f\u0924\u0928 \u0938\u0947 \u0926\u094b\u0917\u0941\u0928\u093e \u0939\u094b\u0917\u093e \u0915\u094d\u092f\u094b\u0902\u0915\u093f \u091c\u0932 (H<sub>2<\/sub>O) \u0915\u0947 \u0905\u0923\u0941 \u092e\u0947\u0902 \u0907\u0928\u0915\u093e \u0906\u092f\u0924\u0928 \u0905\u0928\u0941\u092a\u093e\u0924 2:1 \u0939\u094b\u0924\u093e \u0939\u0948\u0964 \u091c\u0932 \u092e\u0947\u0902 \u0911\u0915\u094d\u0938\u0940\u091c\u0928 \u0924\u0924\u094d\u0935\u094b\u0902 \u0915\u0947 \u090f\u0915 \u092d\u093e\u0917 \u0915\u0940 \u0924\u0941\u0932\u0928\u093e \u092e\u0947\u0902 \u0939\u093e\u0907\u0921\u094d\u0930\u094b\u091c\u0928 \u0924\u0924\u094d\u0935\u094b\u0902 \u0915\u0947 \u0926\u094b \u092d\u093e\u0917 \u0939\u094b\u0924\u0947 \u0939\u0948\u0902\u0964<br \/>\n(c) \u092f\u0926\u093f \u091c\u0932 \u092e\u0947\u0902 \u0924\u0928\u0941 H<sub>2<\/sub>SO<sub>4<\/sub> \u0905\u092e\u094d\u0932 \u0915\u0940 \u0925\u094b\u0921\u093c\u0940-\u0938\u0940 \u092e\u093e\u0924\u094d\u0930\u093e \u0928\u0939\u0940\u0902 \u0921\u093e\u0932\u0947\u0902\u0917\u0947 \u0924\u094b \u091c\u0932 \u092e\u0947\u0902 \u0938\u0947 \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u0927\u093e\u0930\u093e \u092a\u094d\u0930\u0935\u093e\u0939\u093f\u0924 \u0928\u0939\u0940\u0902 \u0939\u094b\u0917\u0940 \u0915\u094d\u092f\u094b\u0902\u0915\u093f \u0936\u0941\u0926\u094d\u0927 \u091c\u0932 \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u0927\u093e\u0930\u093e \u0915\u093e \u0915\u0941\u091a\u093e\u0932\u0915 \u0939\u0948\u0964 H<sub>2<\/sub>SO<sub>4<\/sub> \u0905\u092e\u094d\u0932 \u0915\u0940 \u092c\u0942\u0902\u0926\u0947\u0902 \u0921\u093e\u0932\u0928\u0947 \u092a\u0930, \u0939\u092e \u0907\u0938\u0947 \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u0927\u093e\u0930\u093e \u0915\u093e \u0905\u091a\u094d\u091b\u093e \u0938\u0941\u091a\u093e\u0932\u0915 \u092c\u0928\u093e \u0938\u0915\u0924\u0947 \u0939\u0948\u0902\u0964<\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 9-<br \/>\n<img loading=\"lazy\" src=\"https:\/\/i1.wp.com\/farm5.staticflickr.com\/4832\/46457228542_890c5c68ae_o.png?resize=671%2C88&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 9\" width=\"671\" height=\"88\" data-recalc-dims=\"1\" \/><br \/>\n<img loading=\"lazy\" src=\"https:\/\/i0.wp.com\/farm8.staticflickr.com\/7868\/32636238378_ef5e89243f_o.png?resize=685%2C162&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 9.1\" width=\"685\" height=\"162\" data-recalc-dims=\"1\" \/><\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 10-<br \/>\n\u0911\u0915\u094d\u0938\u0940\u091c\u0928 \u0915\u0940 \u0905\u0928\u0941\u092a\u0938\u094d\u0925\u093f\u0924\u093f \u092e\u0947\u0902 \u0917\u094d\u0932\u0942\u0915\u094b\u091c\u093c \u0926\u094b \u092a\u094d\u0930\u0915\u093e\u0930 \u0938\u0947 \u0935\u093f\u0918\u091f\u093f\u0924 \u0939\u094b\u0924\u093e \u0939\u0948 :<br \/>\n(i) \u091c\u0940\u0935\u093e\u0923\u0941\u0913\u0902 \u0924\u0925\u093e \u092f\u0940\u0938\u094d\u091f \u092b\u0902\u092b\u0942\u0926 \u0915\u094b\u0936\u093f\u0915\u093e \u092e\u0947\u0902, \u0911\u0915\u094d\u0938\u0940\u091c\u0928 \u0915\u0940 \u0905\u0928\u0941\u092a\u0938\u094d\u0925\u093f\u0924\u093f \u092e\u0947\u0902, \u0917\u094d\u0932\u0942\u0915\u094b\u091c\u093c CO<sub>2<\/sub> \u0917\u0948\u0938 \u0924\u0925\u093e \u090f\u0925\u093f\u0932 \u0905\u0932\u094d\u0915\u094b\u0939\u0949\u0932 (C<sub>2<\/sub>H<sub>5<\/sub>OH) \u092e\u0947\u0902 \u0935\u093f\u0918\u091f\u093f\u0924 \u0939\u094b\u0924\u093e \u0939\u0948\u0964 \u0907\u0938 \u0915\u094d\u0930\u093f\u092f\u093e \u092e\u0947\u0902 \u092c\u0939\u0941\u0924 \u0915\u092e \u092e\u093e\u0924\u094d\u0930\u093e \u092e\u0947\u0902 \u090a\u0930\u094d\u091c\u093e \u092a\u094d\u0930\u093e\u092a\u094d\u0924 \u0939\u094b\u0924\u0940 \u0939\u0948\u0964 \u0915\u094d\u092f\u094b\u0902\u0915\u093f \u092f\u0939 \u092a\u094d\u0930\u0915\u094d\u0930\u092e \u0935\u093e\u092f\u0941 \u0911\u0915\u094d\u0938\u0940\u091c\u0928 \u0915\u0940 \u0905\u0928\u0941\u092a\u0938\u094d\u0925\u093f\u0924\u093f \u092e\u0947\u0902 \u0939\u094b\u0924\u093e \u0939\u0948, \u0907\u0938\u0947 \u0905\u0935\u093e\u092f\u0935\u0940\u092f \u0936\u094d\u0935\u0938\u0928 \u0915\u0939\u0924\u0947 \u0939\u0948\u0964<br \/>\n(ii) \u0939\u092e\u093e\u0930\u0940 \u092e\u093e\u0902\u0938\u092a\u0947\u0936\u093f\u092f\u094b\u0902 \u092e\u0947\u0902 \u092d\u0940 \u0917\u094d\u0932\u0942\u0915\u094b\u091c \u0935\u093e\u092f\u0941 \u0915\u0940 \u0905\u0928\u0941\u092a\u0938\u094d\u0925\u093f\u0924\u093f \u092e\u0947\u0902 \u0915\u092d\u0940-\u0915\u092d\u0940 \u0935\u093f\u0918\u091f\u093f\u0924 \u0939\u094b\u0915\u0930 \u0932\u0948\u0915\u094d\u091f\u093f\u0915 \u0905\u092e\u094d\u0932 \u0915\u0947 \u0926\u094b \u0905\u0923\u0941 \u092c\u0928\u093e\u0924\u093e \u0939\u0948\u0964 \u0907\u0938 \u092a\u094d\u0930\u0915\u094d\u0930\u093f\u092f\u093e \u092e\u0947\u0902 \u092d\u0940 \u0915\u092e \u092e\u093e\u0924\u094d\u0930\u093e \u092e\u0947\u0902 \u090a\u0930\u094d\u091c\u093e \u092a\u094d\u0930\u093e\u092a\u094d\u0924 \u0939\u094b\u0924\u0940 \u0939\u0948\u0964<br \/>\n\u0905\u0925\u0935\u093e<br \/>\n\u0927\u092e\u0928\u093f\u092f\u094b\u0902 \u0924\u0925\u093e \u0936\u093f\u0930\u093e\u0913\u0902 \u0915\u0947 \u092c\u0940\u091a \u0905\u0902\u0924\u0930 :<br \/>\n<img loading=\"lazy\" src=\"https:\/\/i0.wp.com\/farm8.staticflickr.com\/7816\/32636238138_d9f89f8f6f_o.png?resize=680%2C171&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 10\" width=\"680\" height=\"171\" data-recalc-dims=\"1\" \/><\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 11-<br \/>\n\u0932\u0915\u094d\u0937\u0923 \u092a\u094d\u0930\u092d\u093e\u0935\u0940 \u0905\u0925\u0935\u093e \u0905\u092a\u094d\u0930\u092d\u093e\u0935\u0940 \u0939\u094b\u0924\u0947 \u0939\u0948\u0902-\u091c\u092c \u092e\u0947\u0902\u0921\u0932 \u0928\u0947 \u090f\u0915 \u0938\u0902\u0924\u0924\u093f (F1 \u092a\u0940\u0922\u093c\u0940) \u092a\u093e\u0928\u0947 \u0939\u0947\u0924\u0941 \u0905\u0932\u0917-\u0905\u0932\u0917 \u0932\u0915\u094d\u0937\u0923 \u0915\u0940 \u092a\u094d\u0930\u0935\u0943\u0924\u094d\u0924\u093f \u0935\u093e\u0932\u0947 \u090f\u0915 \u091c\u0948\u0938\u0947 \u092a\u094c\u0927\u094b\u0902, \u090f\u0915 \u0932\u0902\u092c\u0947 \u092e\u091f\u0930 \u0915\u0947 \u092a\u094c\u0927\u0947 (TT) \u0924\u0925\u093e \u090f\u0915 \u092c\u094c\u0928\u0947 \u092e\u091f\u0930 \u0915\u0947 \u092a\u094c\u0927\u0947 (tt), \u0915\u093e \u0906\u092a\u0938 \u092e\u0947\u0902 \u0938\u0902\u0915\u0930\u0923 \u0915\u0930\u0935\u093e\u092f\u093e \u0924\u094b \u0909\u0938\u0928\u0947 \u092a\u093e\u092f\u093e \u0915\u093f \u0938\u092d\u0940 F1 \u092a\u094c\u0927\u0947 \u0932\u092e\u094d\u092c\u0947 \u0925\u0947\u0964 \u0907\u0938 \u092a\u0940\u0922\u0940 \u0915\u093e \u092a\u094d\u0930\u092d\u093e\u0935\u0940 \u0917\u0941\u0923 \u0932\u0902\u092c\u093e\u0908 \u0925\u093e\u0964 \u092a\u0930\u0902\u0924\u0941 \u091c\u092c F1 \u092a\u0940\u0922\u093c\u0940 \u0915\u0947 \u092a\u094c\u0927\u094b\u0902 \u0915\u093e \u0938\u094d\u0935\u0928\u093f\u0937\u0947\u091a\u0928 \u0915\u0930\u093e\u092f\u093e \u0924\u094b \u0907\u0938\u0947 \u092a\u0940\u0922\u093c\u0940 \u092e\u0947\u0902 \u0926\u094b\u0928\u094b\u0902 \u0932\u0915\u094d\u0937\u0923 \u0905\u0932\u0917 \u0905\u0932\u0917 \u0939\u094b \u0917\u090f\u0964 F2 \u092a\u0940\u0922\u093c\u0940 \u0915\u0947 \u0938\u092d\u0940 \u092a\u094c\u0927\u0947 \u0932\u0902\u092c\u0947 \u0928\u0939\u0940\u0902 \u0925\u0947\u0964 F2 \u092a\u0940\u0922\u093c\u0940 \u0915\u0947 \u090f\u0915-\u091a\u094c\u0925\u093e\u0908 \u092a\u094c\u0927\u0947 \u092c\u094c\u0928\u0947 \u0925\u0947\u0964 F1 \u0914\u0930 F2 \u0926\u094b\u0928\u094b\u0902 \u092a\u0940\u0922\u093c\u093f\u092f\u094b\u0902 \u092e\u0947\u0902 \u0932\u0902\u092c\u093e\u0908 \u0905\u092d\u093f\u0932\u0915\u094d\u0937\u0923 \u092a\u093e\u092f\u093e \u0917\u092f\u093e \u0905\u0930\u094d\u0925\u093e\u0924\u094d \u092f\u0939 \u092a\u094d\u0930\u092d\u093e\u0935\u0940 \u0932\u0915\u094d\u0937\u0923 \u0925\u093e\u0964 \u0935\u0939\u0940\u0902 \u092c\u094c\u0928\u0947\u092a\u0928 \u0915\u093e \u0932\u0915\u094d\u0937\u0923 F1 \u092a\u0940\u0922\u093c\u0940 \u092e\u0947\u0902 \u0926\u093f\u0916\u093e\u0908 \u0928\u0939\u0940\u0902 \u0926\u0947\u0924\u093e \u092a\u0930\u0902\u0924\u0941 \u092f\u0939 \u0932\u0915\u094d\u0937\u0923 \u092b\u093f\u0930 \u0938\u0947 F2 \u092a\u0940\u0922\u093c\u0940 \u092e\u0947\u0902 \u0926\u093f\u0916\u093e\u0908 \u0926\u093f\u092f\u093e \u0905\u0930\u094d\u0925\u093e\u0924\u094d \u092f\u0939 \u0905\u092a\u094d\u0930\u092d\u093e\u0935\u0940 \u0932\u0915\u094d\u0937\u0923 \u0925\u093e\u0964\u0964<\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 12-<br \/>\n(i) \u0932\u0947\u0902\u0938 \u0915\u0940 \u0938\u094d\u0925\u093f\u0924\u093f = 50.0 cm;<br \/>\n\u092e\u094b\u092e\u092c\u0924\u094d\u0924\u0940 \u0915\u0940 \u0938\u094d\u0925\u093f\u0924\u093f = 26.0 cm<br \/>\nu = (50 &#8211; 26) = 24 cm;<br \/>\nu = -24 cm (\u091a\u093f\u0928\u094d\u0939 \u092a\u0930\u093f\u092a\u093e\u091f\u0940 \u0905\u0928\u0941\u0938\u093e\u0930)<br \/>\n\u092a\u0930\u094d\u0926\u0947 \u0915\u0940 \u0938\u094d\u0925\u093f\u0924\u093f = 74.0 cm;<br \/>\nv = 74 &#8211; 50 = 24 cm<br \/>\n<img loading=\"lazy\" src=\"https:\/\/i1.wp.com\/farm8.staticflickr.com\/7907\/44692238140_3061d8586e_o.png?resize=677%2C288&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 12\" width=\"677\" height=\"288\" data-recalc-dims=\"1\" \/><\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 13-<br \/>\n\u0939\u092e\u093e\u0930\u0947 \u091c\u0940\u0935\u0928 \u092e\u0947\u0902 pH \u0915\u0947 \u092e\u0939\u0924\u094d\u0924\u094d\u0935 \u0915\u0947 \u0932\u093f\u090f \u0924\u0940\u0928 \u0909\u0926\u093e\u0939\u0930\u0923 :<br \/>\n(i) \u0939\u092e\u093e\u0930\u0947 \u092a\u093e\u091a\u0928 \u0924\u0902\u0924\u094d\u0930 \u0915\u093e pH : \u0939\u092e\u093e\u0930\u0947 \u0905\u092e\u093e\u0936\u092f \u092e\u0947\u0902 \u092d\u094b\u091c\u0928 \u0905\u092e\u094d\u0932\u0940\u092f \u092e\u093e\u0927\u094d\u092f\u092e pH \u092e\u093e\u0928 4 \u0938\u0947 6 \u0915\u0947 \u092c\u0940\u091a \u092e\u0947\u0902 \u092a\u091a\u0924\u093e \u0939\u0948\u0964 pH \u092e\u093e\u0928 \u0907\u0938\u0938\u0947 \u0915\u092e \u0939\u094b \u091c\u093e\u090f \u0924\u094b \u0905\u092e\u094d\u0932\u0924\u093e \u0915\u093e \u0930\u094b\u0917 \u0939\u094b \u0938\u0915\u0924\u093e \u0939\u0948\u0964<br \/>\n(ii) \u091c\u0932\u0940\u092f \u091c\u0940\u0935 \u0905\u092a\u0928\u0947 \u091c\u0948\u0935\u093f\u0915 \u0915\u093e\u0930\u094d\u092f\u094b\u0902 \u0915\u094b \u0920\u0940\u0915 \u092a\u094d\u0930\u0915\u093e\u0930 \u0938\u0947 \u0924\u092c \u0915\u0930 \u092a\u093e\u0924\u0947 \u0939\u0948\u0902 \u091c\u092c \u091c\u0932 \u0938\u094d\u0930\u094b\u0924\u094b\u0902 \u0915\u093e pH \u092e\u093e\u0928 \u0909\u0926\u093e\u0938\u0940\u0928 (pH \u092e\u093e\u0928 6.5 \u0938\u0947 7.5 \u0915\u0947 \u092c\u0940\u091a) \u0939\u094b\u0924\u093e \u0939\u0948\u0964 \u0905\u092e\u094d\u0932\u0940\u092f \u0935\u0930\u094d\u0937\u093e \u0915\u0947 \u0915\u093e\u0930\u0923 \u091c\u092c \u091c\u0932 \u0938\u094d\u0930\u094b\u0924\u094b\u0902 \u0915\u093e pH \u092e\u093e\u0928 \u0918\u091f \u091c\u093e\u0924\u093e \u0939\u0948 \u0924\u094b \u091c\u0932\u0940\u092f \u091c\u0940\u0935\u0928 \u092c\u0941\u0930\u0940 \u0924\u0930\u0939 \u0938\u0947 \u092a\u094d\u0930\u092d\u093e\u0935\u093f\u0924 \u0939\u094b\u0924\u093e \u0939\u0948\u0964<br \/>\n(iii) pH \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0915\u0947 \u0915\u093e\u0930\u0923 \u0926\u0902\u0924-\u0915\u094d\u0937\u092f : \u0939\u092e\u093e\u0930\u0947 \u0926\u093e\u0902\u0924\u094b\u0902 \u092e\u0947\u0902 \u091b\u0947\u0926 \u092d\u0940 pH \u0915\u0947 \u092e\u0941\u0916 \u0917\u0941\u0939\u093f\u0915\u093e \u092e\u0947\u0902 \u092e\u093e\u0928 \u0915\u0947 \u0915\u092e \u0939\u094b\u0928\u0947 \u0915\u0947 \u0915\u093e\u0930\u0923 \u0939\u094b\u0924\u0947 \u0939\u0948\u0902\u0964 \u0926\u093e\u0902\u0924\u094b\u0902 \u0915\u0947 \u092c\u0940\u091a \u092b\u0902\u0938\u0947 \u0939\u0941\u090f \u0930\u093e\u0924 \u0915\u0947 \u092d\u094b\u091c\u0928 \u0915\u0947 \u0905\u0935\u0936\u0947\u0937\u094b\u0902 \u0915\u0947 \u0938\u093e\u0925 \u092e\u0941\u0916 \u092e\u0947\u0902 \u091c\u0940\u0935\u093e\u0923\u0941 \u0905\u092d\u093f\u0915\u094d\u0930\u093f\u092f\u093e \u0915\u0930\u0924\u0947 \u0939\u0948\u0902 \u0924\u0925\u093e \u0909\u0938\u0947 \u0905\u092e\u094d\u0932 \u092e\u0947\u0902 \u092c\u0926\u0932 \u0926\u0947\u0924\u0947 \u0939\u0948\u0902\u0964 \u092f\u0939 \u0905\u092e\u094d\u0932 \u0926\u093e\u0902\u0924\u094b\u0902 \u0915\u0947 \u090a\u092a\u0930\u0940 \u0915\u0920\u094b\u0930 \u091a\u092e\u0915\u0940\u0932\u0947 \u092d\u093e\u0917 \u0938\u0947 \u0915\u094d\u0930\u093f\u092f\u093e \u0915\u0930 \u0909\u0938\u0947 \u0939\u091f\u093e\u0928\u0947 \u0932\u0917\u0924\u093e \u0939\u0948\u0964 \u091c\u093f\u0938\u0915\u0947 \u0915\u093e\u0930\u0923 \u0926\u093e\u0902\u0924\u094b\u0902 \u092e\u0947\u0902 \u091b\u0947\u0926 \u0939\u094b\u0928\u0947 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\u0930\u093e\u0938\u093e\u092f\u0928\u093f\u0915 \u0938\u0942\u0924\u094d\u0930 : CaSO<sub>4<\/sub>. \u00bdH<sub>2<\/sub>O<br \/>\nPOP \u092c\u0928\u093e\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0938\u092e\u0940\u0915\u0930\u0923 :<br \/>\n<img loading=\"lazy\" src=\"https:\/\/i0.wp.com\/farm8.staticflickr.com\/7811\/46457363372_205fcdcc83_o.png?resize=391%2C49&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 13\" width=\"391\" height=\"49\" data-recalc-dims=\"1\" \/><br \/>\n\u0907\u0938 \u092f\u094c\u0917\u093f\u0915 \u0915\u093e \u090f\u0915 \u0909\u092a\u092f\u094b\u0917-\u0907\u0938 \u092f\u094c\u0917\u093f\u0915 \u0915\u093e \u0909\u092a\u092f\u094b\u0917 \u0918\u0930 \u0915\u0940 \u0926\u0940\u0935\u093e\u0930\u094b\u0902 \u0924\u0925\u093e \u0906\u0902\u0924\u0930\u093f\u0915 \u091b\u0924\u094b\u0902 \u0915\u094b \u0938\u091c\u093e\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0915\u093f\u092f\u093e \u091c\u093e\u0924\u093e 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src=\"https:\/\/i1.wp.com\/farm5.staticflickr.com\/4815\/45785541794_37e4c15438_o.png?resize=239%2C162&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 16\" width=\"239\" height=\"162\" data-recalc-dims=\"1\" \/><br \/>\n\u0915\u094d\u0930\u093f\u092f\u093e\u0915\u0932\u093e\u092a-\u090f\u0915 12 V \u0915\u0940 \u092c\u0948\u091f\u0930\u0940, \u090f\u0915 \u092a\u0930\u093f\u0935\u0924\u0940 \u092a\u094d\u0930\u0924\u093f\u0930\u094b\u0927 (\u0927\u093e\u0930\u093e \u0928\u093f\u092f\u0902\u0924\u094d\u0930\u0915), 0-5 A \u092a\u0930\u093f\u0938\u0930 \u0915\u094b \u0910\u092e\u0940\u091f\u0930, \u090f\u0915 \u092a\u094d\u0932\u0917 \u0915\u0941\u091c\u0940 \u0924\u0925\u093e \u090f\u0915 \u0932\u0902\u092c\u093e \u092e\u094b\u091f\u093e \u0938\u0940\u0927\u093e \u0924\u093e\u0901\u092c\u0947 \u0915\u093e \u0924\u093e\u0930 \u0932\u0940\u091c\u093f\u090f\u0964 \u090f\u0915 \u0906\u092f\u0924\u093e\u0915\u093e\u0930 \u0915\u093e\u0930\u094d\u0921\u092c\u094b\u0930\u094d\u0921 \u0915\u093e \u091f\u0941\u0915\u0921\u093c\u093e \u0932\u0947\u0915\u0930 \u0909\u0938\u0915\u0947 \u092c\u0940\u091a\u094b\u0902\u092c\u0940\u091a \u0915\u093e\u0930\u094d\u0921\u092c\u094b\u0930\u094d\u0921 \u0915\u0947 \u0924\u0932 \u0915\u0947 \u0905\u092d\u093f\u0932\u0902\u092c\u0935\u0924 \u0907\u0938 \u092e\u094b\u091f\u0947 \u0924\u093e\u0930 \u0915\u094b \u092a\u094d\u0930\u0935\u093f\u0937\u094d\u091f \u0915\u0930\u093e\u0907\u090f\u0964 \u092f\u0939 \u0938\u093e\u0935\u0927\u093e\u0928\u0940 \u0930\u0916\u093f\u090f \u0915\u093f \u0915\u093e\u0930\u094d\u0921\u092c\u094b\u0930\u094d\u0921 \u0924\u093e\u0930 \u092e\u0947\u0902 \u0938\u094d\u0925\u093f\u0930 \u0930\u0939\u0947, \u090a\u092a\u0930-\u0928\u0940\u091a\u0947 \u0939\u093f\u0932\u0947-\u0921\u0941\u0932\u0947 \u0928\u0939\u0940\u0902\u0964 \u091a\u093f\u0924\u094d\u0930 \u092e\u0947\u0902 \u0926\u093f\u0916\u093e\u090f \u0905\u0928\u0941\u0938\u093e\u0930 \u0924\u093e\u0901\u092c\u0947 \u0915\u0947 \u0924\u093e\u0930 \u0915\u094b \u0909\u0930\u094d\u0927\u094d\u0935\u093e\u0927\u0930\u0924: \u092c\u093f\u0902\u0926\u0941\u0913\u0902 A \u0924\u0925\u093e B \u0915\u0947 \u092c\u0940\u091a \u0936\u094d\u0930\u0947\u0923\u0940\u0915\u094d\u0930\u092e \u092e\u0947\u0902 \u092c\u0948\u091f\u0930\u0940, \u0910\u092e\u0940\u091f\u0930, \u0927\u093e\u0930\u093e \u0928\u093f\u092f\u0902\u0924\u094d\u0930\u0915 \u0924\u0925\u093e \u092a\u094d\u0932\u0917 \u0915\u0941\u0902\u091c\u0940 \u0938\u0947 \u0938\u0902\u092f\u094b\u091c\u093f\u0924 \u0915\u0940\u091c\u093f\u090f\u0964 \u0924\u093e\u0930 \u0915\u0947 \u091a\u093e\u0930\u094b\u0902 \u0913\u0930 \u0915\u093e\u0930\u094d\u0921\u092c\u094b\u0930\u094d\u0921 \u092a\u0930 \u0915\u0941\u091b \u0932\u094c\u0939-\u091a\u0942\u0930\u094d\u0923 \u090f\u0915\u0938\u092e\u093e\u0928 \u0930\u0942\u092a \u0938\u0947 \u091b\u093f\u0924\u0930\u093e\u0907\u090f\u0964 \u0927\u093e\u0930\u093e-\u0928\u093f\u092f\u0902\u0924\u094d\u0930\u0915 \u0915\u0947 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0915 \u0915\u094b \u0915\u093f\u0938\u0940 \u090f\u0915 \u0928\u093f\u092f\u0924 \u0938\u094d\u0925\u093f\u0924\u093f \u092a\u0930 \u0930\u0916\u093f\u090f \u0924\u0925\u093e \u0910\u092e\u0940\u091f\u0930 \u092e\u0947\u0902 \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u0927\u093e\u0930\u093e \u0915\u093e \u092a\u093e\u0920\u094d\u092f\u093e\u0902\u0915 \u0928\u094b\u091f \u0915\u0940\u091c\u093f\u090f\u0964 \u0915\u0941\u0902\u091c\u0940 \u0932\u0917\u093e\u0915\u0930 \u092a\u0930\u093f\u092a\u0925 \u092c\u0902\u0926 \u0915\u0940\u091c\u093f\u090f \u0924\u093e\u0915\u093f \u0924\u093e\u0901\u092c\u0947 \u0915\u0947 \u0924\u093e\u0930 \u0938\u0947 \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u0927\u093e\u0930\u093e \u092a\u094d\u0930\u0935\u093e\u0939\u093f\u0924 \u0939\u094b\u0964 \u092f\u0939 \u0938\u0941\u0928\u093f\u0936\u094d\u091a\u093f\u0924 \u0915\u0940\u091c\u093f\u090f \u0915\u093f \u092c\u093f\u0902\u0926\u0941\u0913\u0902 A \u0914\u0930 B \u0915\u0947 \u092c\u0940\u091a \u092e\u0947\u0902 \u0932\u0917\u093e \u0924\u093e\u0901\u092c\u0947 \u0915\u093e \u0924\u093e\u0930 \u090a\u0927\u094d\u0930\u094d\u0935\u093e\u0927\u0930\u0924\u0903 \u0938\u0940\u0927\u093e \u0930\u0939\u0947\u0964 \u0915\u093e\u0930\u094d\u0921\u092c\u094b\u0930\u094d\u0921 \u0915\u094b \u0939\u0932\u0915\u0947 \u0938\u0947 \u0915\u0941\u091b \u092c\u093e\u0930 \u0925\u092a\u0925\u092a\u093e\u0907\u090f\u0964 \u0932\u094c\u0939-\u091a\u0942\u0930\u094d\u0923 \u0915\u0947 \u092a\u0948\u091f\u0930\u094d\u0928 \u0915\u093e \u092a\u094d\u0930\u0947\u0915\u094d\u0937\u0923 \u0915\u0940\u091c\u093f\u090f\u0964 \u0906\u092a \u0926\u0947\u0916\u0947\u0902\u0917\u0947 \u0915\u093f \u0932\u094b\u0939-\u091a\u0942\u0930\u094d\u0923 \u0938\u0902\u0930\u0947\u0916\u093f\u0924 \u0939\u094b\u0915\u0930 \u0924\u093e\u0930 \u0915\u0947 \u091a\u093e\u0930\u094b\u0902 \u0913\u0930 \u0938\u0902\u0915\u0947\u0902\u0926\u094d\u0930\u0940 \u0935\u0943\u0924\u094d\u0924\u094b\u0902 \u0915\u0947 \u0930\u0942\u092a \u092e\u0947\u0902 \u0935\u094d\u092f\u0935\u0938\u094d\u0925\u093f\u0924 \u0939\u094b\u0915\u0930 \u090f\u0915 \u0935\u0943\u0924\u094d\u0924\u093e\u0915\u093e\u0930 \u092a\u0948\u091f\u0930\u094d\u0928 \u092c\u0928\u093e\u0924\u093e \u0939\u0948\u0964<br \/>\n(i) \u092f\u0939 \u0928\u093f\u092f\u092e \u0926\u0915\u094d\u0937\u093f\u0923-\u0939\u0938\u094d\u0924 \u0905\u0902\u0917\u0941\u0937\u094d\u0920 \u0928\u093f\u092f\u092e \u0939\u0948\u0964<br \/>\n(ii) \u2022 \u0939\u093e\u0901, \u0907\u0938\u092e\u0947\u0902 \u091a\u0941\u0902\u092c\u0915\u0940\u092f \u0915\u094d\u0937\u0947\u0924\u094d\u0930 \u0909\u0924\u094d\u092a\u093e\u0926\u093f\u0924 \u0939\u094b\u0917\u093e \u0915\u094d\u092f\u094b\u0902\u0915\u093f \u090f\u0932\u094d\u092b\u093e \u0915\u0923\u094b\u0902 \u092a\u0930 \u0927\u0928 \u0906\u0935\u0947\u0936 \u0939\u094b\u0924\u093e \u0939\u0948 \u0924\u0925\u093e \u092f\u0947 \u0917\u0924\u093f\u0936\u0940\u0932 \u0915\u0923 \u090f\u0915 \u092a\u094d\u0930\u0915\u093e\u0930 \u0938\u0947 \u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u0927\u093e\u0930\u093e \u0915\u093e \u092a\u094d\u0930\u0935\u093e\u0939 \u0915\u0930 \u0930\u0939\u0947 \u0939\u0948\u0902\u0964<br \/>\n\u2022 \u0928\u094d\u092f\u0942\u091f\u094d\u0930\u0949\u0928 \u0915\u0923\u094b\u0902 \u0915\u0947 \u0917\u0924\u093f\u0936\u0940\u0932 \u092a\u0941\u0902\u091c \u0915\u0947 \u0915\u093e\u0930\u0923 \u0915\u094b\u0908 \u091a\u0941\u0902\u092c\u0915\u0940\u092f \u0915\u094d\u0937\u0947\u0924\u094d\u0930 \u0909\u0924\u094d\u092a\u0928\u094d\u0928 \u0928\u0939\u0940\u0902 \u0939\u094b\u0917\u093e \u0915\u094d\u092f\u094b\u0902\u0915\u093f \u0907\u0928 \u0915\u0923\u094b\u0902 \u092a\u0930 \u0915\u094b\u0908 \u0906\u0935\u0947\u0936 \u0928\u0939\u0940\u0902 \u0939\u094b\u0924\u093e \u0939\u0948\u0964<\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 17-<br \/>\n\u0907\u0928\u0938\u0947 \u0939\u092e 5 \u092a\u094d\u0930\u0915\u093e\u0930 \u0915\u0947 C<sub>6<\/sub>H<sub>14<\/sub> \u0935\u093e\u0932\u0947 \u0905\u0923\u0941 \u092c\u0928\u093e \u0938\u0915\u0924\u0947 \u0939\u0948\u0902 \u0915\u094d\u092f\u094b\u0902\u0915\u093f C<sub>6<\/sub>H<sub>14<\/sub> (\u0939\u0947\u0915\u094d\u0938\u0947\u0928) \u0915\u0947 5 \u0938\u092e\u093e\u0935\u092f\u0935 \u0939\u094b\u0924\u0947 \u0939\u0948\u0902\u0964<br \/>\n\u092f\u0947 \u0905\u0923\u0941 \u0939\u0948\u0902 :<br \/>\n<img loading=\"lazy\" src=\"https:\/\/i1.wp.com\/farm8.staticflickr.com\/7926\/45785541684_441a771952_o.png?resize=313%2C642&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 17\" width=\"313\" height=\"642\" data-recalc-dims=\"1\" \/><br \/>\n\u0905\u0925\u0935\u093e<br \/>\nC<sub>3<\/sub>H<sub>6<\/sub>O \u0905\u0923\u0941\u0938\u0942\u0924\u094d\u0930 \u0935\u093e\u0932\u0947 \u0926\u094b \u0938\u092e\u093e\u0935\u092f\u0935<br \/>\n(i) C<sub>2<\/sub>H<sub>5<\/sub>CHO, \u092a\u094d\u0930\u094b\u092a\u0947\u0928\u0948\u0932 \u0914\u0930<br \/>\n(ii) CH<sub>3<\/sub>COCH<sub>3<\/sub> \u092a\u094d\u0930\u094b\u092a\u0947\u0928\u094b\u0928 \u0939\u0948\u0902\u0964<br \/>\n<img loading=\"lazy\" src=\"https:\/\/i2.wp.com\/farm8.staticflickr.com\/7874\/46457363212_bb94273d60_o.png?resize=494%2C253&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 17.1\" width=\"494\" height=\"253\" data-recalc-dims=\"1\" \/><\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 18-<br \/>\n(a) (i) &amp; (ii):<br \/>\n<img loading=\"lazy\" src=\"https:\/\/i0.wp.com\/farm5.staticflickr.com\/4913\/46457362882_00980c8b79_o.png?resize=435%2C286&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 18\" width=\"435\" height=\"286\" data-recalc-dims=\"1\" \/><br \/>\n(iii) \u092e\u0947\u0921\u0941\u0932\u093e \u0915\u0947 \u0915\u093e\u0930\u094d\u092f-\u092f\u0939 \u092a\u0936\u094d\u091a\u092e\u0938\u094d\u0924\u093f\u0937\u094d\u0915 \u0915\u093e \u090f\u0915 \u092d\u093e\u0917 \u0939\u0948\u0964 \u092e\u0947\u0921\u0941\u0932\u093e \u0930\u0915\u094d\u0924\u0926\u093e\u092c, \u0932\u093e\u0930 \u0906\u0928\u093e \u0924\u0925\u093e \u0935\u092e\u0928 \u0906\u0926\u093f \u0915\u094d\u0930\u093f\u092f\u093e\u0913\u0902 \u0915\u094b \u0928\u093f\u092f\u0902\u0924\u094d\u0930\u093f\u0924 \u0915\u0930\u0924\u093e \u0939\u0948\u0964<br \/>\n\u0905\u0928\u0941\u092e\u0938\u094d\u0924\u093f\u0937\u094d\u0915 \u0915\u0947 \u0915\u093e\u0930\u094d\u092f-\u0905\u0928\u0941\u092e\u0938\u094d\u0924\u093f\u0937\u094d\u0915 \u092d\u0940 \u092a\u0936\u094d\u091a\u092e\u0938\u094d\u0924\u093f\u0937\u094d\u0915 \u0915\u093e \u090f\u0915 \u092d\u093e\u0917 \u0939\u0948\u0964 \u0905\u0928\u0941\u092e\u0938\u094d\u0924\u093f\u0937\u094d\u0915 \u090f\u091a\u094d\u091b\u093f\u0915 \u0915\u094d\u0930\u093f\u092f\u093e\u0913\u0902 \u0915\u094b \u0928\u093f\u092f\u0902\u0924\u094d\u0930\u093f\u0924 \u0915\u0930\u0924\u093e \u0939\u0948\u0964 \u092f\u0939 \u092d\u093e\u0917 \u0936\u0930\u0940\u0930 \u0915\u0940 \u0938\u0902\u0938\u094d\u0925\u093f\u0924\u093f \u0924\u0925\u093e \u0938\u0902\u0924\u0941\u0932\u0928 \u0915\u0947 \u0932\u093f\u090f \u092d\u0940 \u0909\u0924\u094d\u0924\u0930\u0926\u093e\u092f\u0940<br \/>\n(b) \u0935\u0943\u0926\u094d\u0927\u093f \u0939\u093e\u0930\u094d\u092e\u094b\u0928 \u0936\u0930\u0940\u0930 \u0915\u0940 \u0935\u0943\u0926\u094d\u0927\u093f \u0924\u0925\u093e \u0935\u093f\u0915\u093e\u0938 \u0915\u094b \u0928\u093f\u092f\u0924\u094d\u0930\u093f\u0924 \u0915\u0930\u0924\u093e \u0939\u0948\u0964 \u0935\u0943\u0926\u094d\u0927\u093f \u0939\u093e\u0930\u094d\u092e\u094b\u0928 \u0915\u0947 \u0905\u0927\u093f\u0915 \u0909\u0924\u094d\u092a\u093e\u0926\u0928 \u0915\u0947 \u0915\u093e\u0930\u0923, \u0935\u094d\u092f\u0915\u094d\u0924\u093f \u0915\u093e\u092b\u0940 \u0932\u092e\u094d\u092c\u093e \u0935 \u0926\u093e\u0928\u0935 \u0930\u0942\u092a\u0940 \u0939\u094b \u091c\u093e\u0924\u093e \u0939\u0948\u0964 \u0924\u0925\u093e \u0907\u0938 \u0939\u093e\u0930\u094d\u092e\u094b\u0928 \u0915\u0947 \u0915\u092e \u0909\u0924\u094d\u092a\u093e\u0926\u0928 \u0915\u0947 \u0915\u093e\u0930\u0923 \u0935\u094d\u092f\u0915\u094d\u0924\u093f \u092c\u094c\u0928\u093e \u0930\u0939 \u091c\u093e\u0924\u093e \u0939\u0948\u0964<\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 19-<br \/>\n(a) \u0928\u0941\u092a\u0941\u0930 \u0928\u093f\u0915\u091f\u0926\u0943\u0937\u094d\u091f\u093f \u0926\u094b\u0937 \u0938\u0947 \u092a\u0940\u0921\u093c\u093f\u0924 \u0939\u0948\u0964\u0964<br \/>\n(b) P = -4.5D; f= ?; f = \\(\\frac { 1 }{ p }\\)<br \/>\nf = \\(\\frac { 1 }{ -4.5 }\\) = \\(\\frac { -10 }{ 45 }\\) = -0.22 \u092e\u0940\u0966<br \/>\n\u0926\u094b\u0937 \u0915\u094b \u0920\u0940\u0915 \u0915\u0930\u0928\u0947 \u0935\u093e\u0932\u0947 \u0932\u0947\u0902\u0938 \u0915\u0940 \u092b\u094b\u0915\u0938 \u0926\u0942\u0930\u0940 -0.22 m \u0939\u0948\u0964 (-) \u091a\u093f\u0928\u094d\u0939 \u0926\u0930\u094d\u0936\u093e\u0924\u093e \u0939\u0948 \u0915\u093f \u092f\u0939 \u0905\u0935\u0924\u0932 \u0932\u0947\u0902\u0938 \u0939\u0948\u0964<br \/>\n(c) (i) \u0926\u094b\u0937 \u0926\u093f\u0916\u093e\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0935 (ii) \u0909\u0938\u0947 \u0920\u0940\u0915 \u0915\u0930\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0915\u093f\u0930\u0923 \u0906\u0930\u0947\u0916 :<br \/>\n<img loading=\"lazy\" src=\"https:\/\/i0.wp.com\/farm5.staticflickr.com\/4878\/45785541364_76c59389a4_o.png?resize=637%2C221&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 19\" width=\"637\" height=\"221\" data-recalc-dims=\"1\" \/><br \/>\n(d) \u0928\u093f\u0915\u091f\u0926\u0943\u0937\u094d\u091f\u093f \u0926\u094b\u0937 \u0915\u0947 \u0915\u093e\u0930\u0923 :<br \/>\n(i) \u0928\u0947\u0924\u094d\u0930\u0917\u094b\u0932\u0915\u094b\u0902 \u0915\u0940 \u0932\u092e\u094d\u092c\u093e\u0908 \u092c\u0922\u093c\u0928\u0947 \u0915\u0947 \u0915\u093e\u0930\u0923\u0964<br \/>\n(ii) \u0905\u092d\u093f\u0928\u0947\u0924\u094d\u0930 \u0932\u0947\u0902\u0938 \u0915\u0940 \u0935\u0915\u094d\u0930\u0924\u093e \u0905\u0924\u094d\u092f\u0927\u093f\u0915 \u0939\u094b\u0928\u0947 \u0915\u0947 \u0915\u093e\u0930\u0923\u0964<\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 20-<br \/>\n(a) \u0938\u0915\u094d\u0930\u093f\u092f\u0924\u093e \u0936\u094d\u0930\u0947\u0923\u0940-\u0927\u093e\u0924\u0941\u0913\u0902 \u0915\u094b \u0909\u0928\u0915\u0940 \u0918\u091f\u0924\u0940 \u0939\u0941\u0908 \u0915\u094d\u0930\u093f\u092f\u093e\u0936\u0940\u0932\u0924\u093e \u0915\u0947 \u0905\u0928\u0941\u0938\u093e\u0930 \u090f\u0915 \u0916\u0921\u093c\u0940 \u092a\u0902\u0915\u094d\u0924\u093f \u092e\u0947\u0902 \u0915\u094d\u0930\u092e\u092c\u0926\u094d\u0927 \u0915\u0930\u0928\u0947 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\u0905\u092a\u0928\u0947 \u0938\u0947 \u0928\u0940\u091a\u0947 \u0935\u093e\u0932\u0940 \u0927\u093e\u0924\u0941\u0913\u0902 \u0915\u094b \u0909\u0928\u0915\u0947 \u0932\u0935\u0923\u094b\u0902 \u0915\u0947 \u0935\u093f\u0932\u092f\u0928\u094b\u0902 \u0938\u0947 \u0935\u093f\u0938\u094d\u0925\u093e\u092a\u093f\u0924 \u0915\u0930 \u0938\u0915\u0924\u0940 \u0939\u0948\u0964 \u091c\u094b \u0927\u093e\u0924\u0941 \u0907\u0938 \u0936\u094d\u0930\u0947\u0923\u0940 \u092e\u0947\u0902 \u0939\u093e\u0907\u0921\u094d\u0930\u094b\u091c\u0928 \u0938\u0947 \u090a\u092a\u0930 \u0939\u0948\u0902, \u0935\u0947 \u0939\u093e\u0907\u0921\u094d\u0930\u094b\u091c\u0928 \u0915\u094b \u0924\u0928\u0941 \u0905\u092e\u094d\u0932\u094b\u0902 \u092e\u0947\u0902 \u0938\u0947 \u0924\u0925\u093e \u091c\u0932 \u092e\u0947\u0902 \u0938\u0947 \u0935\u093f\u0938\u094d\u0925\u093e\u092a\u093f\u0924 \u0915\u0930 \u0938\u0915\u0924\u0940 \u0939\u0948\u0902\u0964<br \/>\n(b) \u092e\u0927\u094d\u092f\u092e \u0915\u094d\u0930\u092e \u0915\u0940 \u0927\u093e\u0924\u0941\u0913\u0902 \u0915\u094b \u0909\u0928\u0915\u0947 \u0911\u0915\u094d\u0938\u093e\u0907\u0921 \u092f\u094c\u0917\u093f\u0915\u094b\u0902 \u0938\u0947 \u0926\u094b \u0935\u093f\u0927\u093f\u092f\u094b\u0902 \u0926\u094d\u0935\u093e\u0930\u093e \u092a\u094d\u0930\u093e\u092a\u094d\u0924 \u0915\u093f\u092f\u093e \u091c\u093e \u0938\u0915\u0924\u093e \u0939\u0948\u0902 :<br \/>\n<img loading=\"lazy\" src=\"https:\/\/i1.wp.com\/farm5.staticflickr.com\/4839\/46457362102_9b999cd6bf_o.png?resize=634%2C246&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 20\" width=\"634\" height=\"246\" data-recalc-dims=\"1\" \/><\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 21-<br \/>\n(a) \u0906\u0927\u0941\u0928\u093f\u0915 \u091c\u0940\u0935\u0928 \u092e\u0947\u0902 \u0905\u0927\u093f\u0915 \u0915\u091a\u0930\u093e \u0909\u0924\u094d\u092a\u093e\u0926\u0928 \u0939\u094b\u0928\u0947 \u0915\u0947 \u0926\u094b \u0909\u0926\u093e\u0939\u0930\u0923 :<br \/>\n(i) \u0935\u0930\u094d\u0924\u092e\u093e\u0928 \u092e\u0947\u0902 \u092c\u0939\u0941\u0924 \u0905\u0927\u093f\u0915 \u092e\u093e\u0924\u094d\u0930\u093e \u092e\u0947\u0902 \u0905\u092a\u0918\u091f\u093f\u0924 \u092a\u0926\u093e\u0930\u094d\u0925\u094b\u0902, \u091c\u0948\u0938\u0947 \u092a\u0949\u0932\u0940\u0925\u0940\u0928, \u092a\u094d\u0932\u093e\u0938\u094d\u091f\u093f\u0915 \u0924\u0925\u093e \u092a\u0947\u092a\u0930 \u092a\u094d\u0932\u0947\u091f\u094d\u0938, \u0915\u093e \u0909\u092a\u092f\u094b\u0917 \u092c\u0922\u093c \u0917\u092f\u093e \u0939\u0948\u0964<br \/>\n(ii) \u0915\u093e\u0902\u091a \u0915\u0940 \u092c\u094b\u0924\u0932\u094b\u0902 \u0924\u0925\u093e \u091f\u093f\u0928 \u0915\u0947 \u0921\u093f\u092c\u094d\u092c\u094b\u0902 \u0906\u0926\u093f \u0915\u093e \u0909\u092a\u092f\u094b\u0917 \u092d\u0940 \u092c\u0939\u0941\u0924 \u092c\u0922\u093c \u0917\u092f\u093e \u0939\u0948\u0964<br \/>\n\u0915\u091a\u0930\u093e, \u0915\u092e \u0915\u0930\u0928\u0947 \u0915\u0947 \u0938\u0941\u091d\u093e\u0935-\u0939\u092e \u0905\u0928\u093f\u092e\u094d\u0928\u0940\u0915\u0930\u0923\u0940\u092f \u0915\u091a\u0930\u0947 \u0915\u093e \u0928\u093f\u092a\u091f\u093e\u0928 \u0915\u092e \u0909\u092a\u092f\u094b\u0917, \u092a\u0941\u0928: \u0909\u092a\u092f\u094b\u0917 \u0924\u0925\u093e \u092a\u0941\u0928\u0903 \u091a\u0915\u094d\u0930\u0923 \u091c\u0948\u0938\u0940 \u0924\u0915\u0928\u0940\u0915\u094b\u0902 \u0915\u093e \u092a\u094d\u0930\u092f\u094b\u0917 \u0915\u0930\u0915\u0947 \u0915\u0930 \u0938\u0915\u0924\u0947 \u0939\u0948\u0902\u0964 \u0939\u092e\u0947\u0902 \u092a\u094d\u0932\u093e\u0938\u094d\u091f\u093f\u0915 \u0935 \u0915\u093e\u0902\u091a \u0915\u0947 \u0921\u093f\u092c\u094d\u092c\u094b\u0902 \u0915\u094b \u0918\u0930\u094b\u0902 \u092e\u0947\u0902 \u092a\u0941\u0928\u0903 \u092a\u094d\u0930\u092f\u094b\u0917 \u0915\u0930\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u092a\u094d\u0930\u094b\u0924\u094d\u0938\u093e\u0939\u093f\u0924 \u0915\u0930\u0928\u093e \u091a\u093e\u0939\u093f\u090f \u0924\u093e\u0915\u093f \u0939\u092e \u0907\u0938 \u092a\u094d\u0930\u0915\u093e\u0930 \u0915\u0947 \u0915\u091a\u0930\u0947 \u0915\u0940 \u092e\u093e\u0924\u094d\u0930\u093e \u092e\u0947\u0902 \u0915\u092e\u0940 \u0932\u093e \u0938\u0915\u0947\u0902\u0964 \u092a\u0948\u0915\u093f\u0902\u0917 \u0915\u093f\u090f \u091c\u093e\u0928\u0947 \u0935\u093e\u0932\u0947 \u092a\u0926\u093e\u0930\u094d\u0925 \u092a\u0941\u0928\u0903 \u092a\u094d\u0930\u092f\u094b\u0917 \u0915\u093f\u090f \u091c\u093e\u0928\u0947 \u0935\u093e\u0932\u0947 \u092a\u0926\u093e\u0930\u094d\u0925\u094b\u0902 \u0938\u0947 \u092c\u0928\u093e\u090f \u091c\u093e\u0928\u0947 \u091a\u093e\u0939\u093f\u090f\u0902-\u091c\u0948\u0938\u0947 \u0915\u092a\u0921\u093c\u093e \u0924\u0925\u093e \u0915\u093e\u0917\u091c\u093c\u0964<br \/>\n(b) \u0907\u0938 \u0916\u093e\u0926\u094d\u092f \u0936\u094d\u0930\u0943\u0902\u0916\u0932\u093e \u0915\u093e \u0938\u0939\u0940 \u0915\u094d\u0930\u092e \u0939\u0948 :<br \/>\n\u0918\u093e\u0938 \u2192 \u0915\u0940\u0921\u093c\u093e \u2192 \u092e\u0947\u0902\u0922\u0915 \u2192 \u0938\u093e\u0902\u092a \u2192 \u092c\u093e\u091c<br \/>\n\u0907\u0928\u092e\u0947\u0902 \u0938\u0947 \u092c\u093e\u091c \u092e\u0947\u0902 \u0938\u092c\u0938\u0947 \u0905\u0927\u093f\u0915 \u092e\u093e\u0924\u094d\u0930\u093e \u092e\u0947\u0902 \u0905\u0928\u093f\u092e\u094d\u0928\u0940\u0915\u0930\u0923\u0940\u092f \u0930\u0938\u093e\u092f\u0928 \u092a\u093e\u090f \u091c\u093e\u090f\u0902\u0917\u0947\u0964 \u0907\u0938 \u092a\u094d\u0930\u0915\u094d\u0930\u092e \u0915\u094b \u091c\u0948\u0935 \u0906\u0935\u0930\u094d\u0927\u0928 \u0915\u0939\u0924\u0947 \u0939\u0948\u0902\u0964<br \/>\n\u0905\u0925\u0935\u093e<br \/>\n(a) \u091c\u0932 \u0938\u0902\u092d\u0930 \u092a\u094d\u0930\u092c\u0902\u0927\u0928-\u092e\u093f\u091f\u094d\u091f\u0940, \u092d\u0942\u092e\u093f \u0924\u0925\u093e \u091c\u0932 \u0938\u094d\u0930\u094b\u0924\u094b\u0902 \u0915\u094b \u0938\u0902\u0930\u0915\u094d\u0937\u0923 \u091c\u092c \u0935\u0948\u091c\u094d\u091e\u093e\u0928\u093f\u0915 \u092a\u0926\u094d\u0927\u0924\u093f\u092f\u093e\u0901 \u0905\u092a\u0928\u093e \u0915\u0930\u0947 \u0915\u093f\u092f\u093e \u091c\u093e\u090f \u0924\u094b \u0907\u0938\u0947 \u091c\u0932 \u0938\u0902\u092d\u0930 \u092a\u094d\u0930\u092c\u0902\u0927\u0928 \u0915\u0939\u0924\u0947 \u0939\u0948\u0902\u0964<br \/>\n\u091c\u0932 \u0938\u0902\u092d\u0930 \u092a\u094d\u0930\u092c\u0902\u0927\u0928 \u0915\u0947 \u0926\u094b \u0932\u093e\u092d :<br \/>\n(i) \u0907\u0938\u0938\u0947 \u0939\u092e \u0905\u0915\u093e\u0932 \u0924\u0925\u093e \u092c\u093e\u0922\u093c \u0915\u0940 \u0938\u092e\u0938\u094d\u092f\u093e \u0915\u094b \u0915\u093e\u092b\u0940 \u0939\u0926 \u0924\u0915 \u0928\u093f\u092f\u0902\u0924\u094d\u0930\u093f\u0924 \u0915\u0930 \u0938\u0915\u0924\u0947 \u0939\u0948\u0902\u0964<br \/>\n(ii) \u0907\u0938 \u092a\u094d\u0930\u092c\u0902\u0927\u0928 \u0926\u094d\u0935\u093e\u0930\u093e \u0938\u094d\u0925\u093e\u0928\u0940\u092f \u0938\u092e\u0941\u0926\u093e\u092f \u0915\u0947 \u0932\u094b\u0917\u094b\u0902 \u0926\u094d\u0935\u093e\u0930\u093e \u092c\u0928\u093e\u090f \u0917\u090f \u0909\u0924\u094d\u092a\u093e\u0926\u094b\u0902 \u0915\u093e \u0909\u0924\u094d\u092a\u093e\u0926\u0928 \u092c\u0922\u093c\u0947\u0917\u093e \u091c\u093f\u0938\u0938\u0947 \u0909\u0928\u0915\u0940 \u0906\u092f \u092e\u0947\u0902 \u092d\u0940 \u0935\u0943\u0926\u094d\u0927\u093f \u0939\u094b\u0917\u0940\u0964<br \/>\n(b) \u092e\u0928\u0941\u0937\u094d\u092f\u094b\u0902 \u0915\u093e \u0905\u092a\u0928\u0940 \u0916\u093e\u0926\u094d\u092f \u0936\u094d\u0930\u0943\u0902\u0916\u0932\u093e\u0913\u0902 \u092e\u0947\u0902 \u0938\u092c\u0938\u0947 \u090a\u092a\u0930 \u0915\u0947 \u092a\u094b\u0937\u0940 \u0938\u094d\u0924\u0930 \u092a\u0930 \u092a\u093e\u092f\u0947 \u091c\u093e\u0928\u0947 \u0915\u0947 \u0915\u093e\u0930\u0923, \u092e\u093e\u0928\u0935 \u0936\u0930\u0940\u0930 \u092e\u0947\u0902 \u0939\u093e\u0928\u093f\u0915\u093e\u0930\u0915 \u0930\u0938\u093e\u092f\u0928\u094b\u0902 \u0915\u0940 \u092e\u093e\u0924\u094d\u0930\u093e \u091c\u0948\u0935-\u0906\u0935\u0930\u094d\u0927\u0928 \u0915\u0947 \u0915\u093e\u0930\u0923 \u0932\u0917\u093e\u0924\u093e\u0930 \u092c\u0922\u093c\u0924\u0940 \u091c\u093e\u090f\u0917\u0940\u0964 \u091c\u093f\u0938\u0938\u0947 \u092e\u093e\u0928\u0935 \u0936\u0930\u0940\u0930 \u092e\u0947\u0902 \u0915\u0908 \u092a\u094d\u0930\u0915\u093e\u0930 \u0915\u0947 \u0918\u093e\u0924\u0915 \u0930\u094b\u0917 \u0939\u094b \u0938\u0915\u0924\u0947 \u0939\u0948\u0902\u0964<br \/>\n\u0938\u092c\u0938\u0947 \u090a\u092a\u0930\u0940 \u092a\u094b\u0937\u0940 \u0938\u094d\u0924\u0930 \u092a\u0930 \u0939\u094b\u0928\u0947 \u0915\u0947 \u0915\u093e\u0930\u0923, \u092e\u0928\u0941\u0937\u094d\u092f \u0915\u094b \u092d\u094b\u091c\u0928 \u0915\u0940 \u090a\u0930\u094d\u091c\u093e \u092d\u0940 \u0915\u093e\u092b\u0940 \u0915\u092e \u092e\u093e\u0924\u094d\u0930\u093e \u092e\u0947\u0902 \u0909\u092a\u0932\u092c\u094d\u0927 \u0939\u094b \u092a\u093e\u0924\u0940 \u0939\u0948 (10% \u090a\u0930\u094d\u091c\u093e \u092a\u094d\u0930\u0935\u093e\u0939 \u0928\u093f\u092f\u092e\u093e\u0928\u0941\u0938\u093e\u0930)\u0964<\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 22-<br \/>\n(a) \u0910\u0938\u093f\u091f\u093f\u0915 \u0905\u092e\u094d\u0932 \u092b\u093f\u0928\u0949\u092b\u094d\u0925\u0947\u0932\u0940\u0928 \u0935\u093f\u0932\u092f\u0928 \u092e\u0947\u0902 \u0930\u0902\u0917\u0939\u0940\u0928 \u0915\u093e \u0930\u0902\u0917\u0939\u0940\u0928 \u0939\u0940 \u0930\u0939\u0947\u0917\u093e\u0964<br \/>\n(b) \u0938\u093e\u0930\u094d\u0935\u0924\u094d\u0930\u093f\u0915 \u0938\u0942\u091a\u0915 \u092e\u0947\u0902 \u0907\u0938\u0915\u093e \u0930\u0902\u0917 \u0938\u0902\u0924\u0930\u0940 \u0939\u094b \u091c\u093e\u090f\u0917\u093e\u0964<br \/>\n(c) \u0906\u0938\u0941\u0924 \u091c\u0932 \u092e\u0947\u0902 \u0905\u092e\u094d\u0932 \u0935\u093f\u0932\u092f \u0939\u094b \u091c\u093e\u090f\u0917\u093e \u0924\u0925\u093e \u090f\u0915 \u092a\u093e\u0930\u0926\u0930\u094d\u0936\u0940 \u0936\u0941\u0926\u094d\u0927 \u0935\u093f\u0932\u092f\u0928 \u092c\u0928\u093e\u090f\u0917\u093e\u0964<br \/>\n(d) \u0907\u0938\u092e\u0947\u0902 \u0938\u0947 \u090f\u0915 \u0930\u0902\u0917\u0939\u0940\u0928 \u0917\u0948\u0938 CO<sub>2<\/sub> \u0909\u0924\u094d\u092a\u093e\u0926\u093f\u0924 \u0939\u094b\u0917\u0940, \u091c\u094b \u0915\u093f \u091a\u0942\u0928\u0947 \u0915\u0947 \u092a\u093e\u0928\u0940 \u0915\u094b \u0926\u0942\u0927\u093f\u092f\u093e \u0915\u0930 \u0926\u0947\u0924\u0940 \u0939\u0948\u0964<\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 23-<br \/>\n\u092a\u094d\u0930\u092f\u094b\u0917 I \u092e\u0947\u0902 \u0938\u093e\u092c\u0941\u0928 \u0915\u0940 \u091d\u093e\u0917 \u0915\u0940 \u0915\u093e\u092b\u0940 \u0905\u0927\u093f\u0915 \u092e\u093e\u0924\u094d\u0930\u093e \u092c\u0928\u0947\u0917\u0940\u0964<br \/>\n\u092a\u094d\u0930\u092f\u094b\u0917 II \u092e\u0947\u0902 \u0938\u093e\u092c\u0941\u0928 \u0915\u0940 \u091d\u093e\u0917 \u0915\u093e\u092b\u0940 \u0915\u092e \u092e\u093e\u0924\u094d\u0930\u093e \u092e\u0947\u0902 \u092c\u0928\u0947\u0917\u0940 \u0915\u094d\u092f\u094b\u0902\u0915\u093f \u0909\u0938\u092e\u0947\u0902 Ca<sup>2+<\/sup> \u0906\u092f\u0928 \u0939\u094b\u0928\u0947 \u0915\u0947 \u0915\u093e\u0930\u0923 \u0935\u0939 \u091c\u0932 \u0915\u0920\u094b\u0930 \u0939\u094b \u091c\u093e\u090f\u0917\u093e\u0964 \u0915\u0920\u094b\u0930 \u091c\u0932 \u092e\u0947\u0902 \u0938\u093e\u092c\u0941\u0928 \u091d\u093e\u0917 \u0928\u0939\u0940\u0902 \u092c\u0928\u093e\u0924\u093e \u0939\u0948, \u092a\u0930\u0902\u0924\u0941 \u0938\u092b\u0947\u0926 \u0905\u0918\u0941\u0932\u0928\u0936\u0940\u0932 \u091d\u093e\u0917 \u092c\u0928\u093e\u0924\u093e \u0939\u0948\u0964<\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 24-<br \/>\n\u092f\u0939 \u0935\u093f\u0927\u093f \u0905\u0932\u0948\u0902\u0917\u093f\u0915 \u092a\u094d\u0930\u091c\u0928\u0928 \u0915\u0940 \u092e\u0941\u0915\u0941\u0932\u0928 \u0935\u093f\u0927\u093f \u0915\u0947 \u0928\u093e\u092e \u0938\u0947 \u091c\u093e\u0928\u0940 \u091c\u093e\u0924\u0940 \u0939\u0948\u0964<br \/>\n<img loading=\"lazy\" src=\"https:\/\/i1.wp.com\/farm5.staticflickr.com\/4905\/32636452678_861c954a73_o.png?resize=597%2C161&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 24\" width=\"597\" height=\"161\" data-recalc-dims=\"1\" \/><\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 25-<br \/>\n\u0926\u094b \u0938\u093e\u0935\u0927\u093e\u0928\u093f\u092f\u093e\u0901 :<br \/>\n(i) \u0909\u092a\u0915\u0930\u0923 \u092a\u0942\u0930\u0940 \u0924\u0930\u0939 \u0938\u0947 \u0935\u093e\u092f\u0941\u0930\u0941\u0926\u094d\u0927 \u0939\u094b\u0928\u093e \u091a\u093e\u0939\u093f\u090f \u0924\u093e\u0915\u093f \u0909\u0924\u094d\u092a\u093e\u0926\u093f\u0924 CO<sub>2<\/sub> \u0917\u0948\u0938 \u0909\u0938\u092e\u0947\u0902 \u0938\u0947 \u092c\u093e\u0939\u0930 \u0928 \u0928\u093f\u0915\u0932 \u092a\u093e\u090f\u0964<br \/>\n(ii) \u092b\u094d\u0932\u093e\u0938\u094d\u0915 \u092e\u0947\u0902 \u0905\u0902\u0915\u0941\u0930\u093f\u0924 \u0939\u094b\u0924\u0947 \u0939\u0941\u090f (\u091c\u0940\u0935\u093f\u0924) \u092c\u0940\u091c \u0932\u093f\u090f \u091c\u093e\u090f\u0902\u0964<\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 26-<br \/>\n\u0917\u094d\u0930\u093e\u092b \u0938\u0947 \u0939\u092e V \u0924\u0925\u093e I \u0915\u0947 \u092e\u093e\u0928\u094b\u0902 \u0915\u094b \u0932\u0947 \u0938\u0915\u0924\u0947 \u0939\u0948\u0902 :<br \/>\nV = (6.7 &#8211; 3.4) = 3.3 \u0935\u094b\u0932\u094d\u091f<br \/>\nI = (2.0 &#8211; 1.0) = 1.0 A<br \/>\nR = \\(\\frac { V }{ I }\\) = \\(\\frac { 3.3 }{ 1.0 }\\) = 3.3\u2126<br \/>\n\u092a\u094d\u0930\u0924\u093f\u0930\u094b\u0927 = 3.3 \u2126<br \/>\n<img loading=\"lazy\" src=\"https:\/\/i0.wp.com\/farm5.staticflickr.com\/4859\/45596041235_7021b3f7ab_o.png?resize=327%2C257&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 26\" width=\"327\" height=\"257\" data-recalc-dims=\"1\" \/><br \/>\n\u0905\u0925\u0935\u093e<br \/>\n\u0910\u092e\u0940\u091f\u0930 \u092e\u0947\u0902 10 \u092d\u093e\u0917\u094b\u0902 \u0915\u0947 \u092c\u0940\u091a 0 \u0938\u0947 0.5 A \u0915\u093e \u092e\u093e\u0928 \u0939\u0948\u0964<br \/>\n1 \u092d\u093e\u0917 \u0915\u093e \u092e\u093e\u0928 = \\(\\frac { 0.5-0.0 }{ 10 }\\) = 0.05A<br \/>\n\u0910\u092e\u0940\u091f\u0930 \u0915\u0940 \u0938\u0941\u0908 17 \u0935\u0947\u0902 \u092d\u093e\u0917 \u0915\u0947 \u0928\u093f\u0936\u093e\u0928\u0947 \u092a\u0930 \u092a\u093e\u0908 \u091c\u093e\u0924\u0940 \u0939\u0948\u0964<br \/>\n\u0935\u093f\u0926\u094d\u092f\u0941\u0924 \u0927\u093e\u0930\u093e \u0915\u0940 \u092e\u093e\u0924\u094d\u0930\u093e = 0.05 x 17 = 0.85A<\/p>\n<p>\u0909\u0924\u094d\u0924\u0930 27-<br \/>\n\u0915\u093e\u0901\u091a \u0915\u0947 \u0924\u094d\u0930\u093f\u092d\u0941\u091c \u092a\u094d\u0930\u093f\u091c\u094d\u092e \u0938\u0947 \u092a\u094d\u0930\u0915\u093e\u0936 \u0915\u093e \u0905\u092a\u0935\u0930\u094d\u0924\u0928 :<br \/>\n<img loading=\"lazy\" src=\"https:\/\/i1.wp.com\/farm8.staticflickr.com\/7811\/45785636604_b0d1f33ecf_o.png?resize=262%2C130&#038;ssl=1\" alt=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 27\" width=\"262\" height=\"130\" data-recalc-dims=\"1\" \/><br \/>\nPE &#8211; \u0906\u092a\u0924\u093f\u0924 \u0915\u093f\u0930\u0923<br \/>\nEF &#8211; \u0905\u092a\u0935\u0930\u094d\u0924\u093f\u0924 \u0915\u093f\u0930\u0923<br \/>\nFS &#8211; \u0928\u093f\u0930\u094d\u0917\u0924 \u0915\u093f\u0930\u0923<br \/>\n\u2220A &#8211; \u092a\u094d\u0930\u093f\u091c\u094d\u092e \u0915\u094b\u0923<br \/>\n\u2220i &#8211; \u0906\u092a\u0924\u0928 \u0915\u094b\u0923<br \/>\n\u2220r &#8211; \u0905\u092a\u0935\u0930\u094d\u0924\u0928 \u0915\u094b\u0923<br \/>\n\u2220e &#8211; \u0928\u093f\u0930\u094d\u0917\u0924 \u0915\u094b\u0923<br \/>\n\u2220D &#8211; \u0935\u093f\u091a\u0932\u0928 \u0915\u094b\u0923<\/p>\n<p>We hope the CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 help you. If you have any query regarding CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4, drop a comment below and we will get back to you at the earliest.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 is part of CBSE Sample Papers for Class 10 Science in Hindi Medium\u00a0. Here we have given CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 Board CBSE &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/ncertsolutions.guru\/cbse-sample-papers-for-class-10-science-hindi-paper-4\/\"> <span class=\"screen-reader-text\">CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":5,"featured_media":7874,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[29,2],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v16.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 - NCERT Solutions<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ncertsolutions.guru\/cbse-sample-papers-for-class-10-science-hindi-paper-4\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 - NCERT Solutions\" \/>\n<meta property=\"og:description\" content=\"CBSE Sample Papers for Class 10 Science in Hindi Medium Paper 4 is part of CBSE Sample Papers for Class 10 Science in Hindi Medium\u00a0. 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