{"id":19109,"date":"2021-02-20T17:24:39","date_gmt":"2021-02-20T11:54:39","guid":{"rendered":"https:\/\/ncertsolutions.guru\/?p=19109"},"modified":"2021-02-20T17:24:39","modified_gmt":"2021-02-20T11:54:39","slug":"mcq-questions-for-class-12-chemistry-chapter-5","status":"publish","type":"post","link":"https:\/\/ncertsolutions.guru\/mcq-questions-for-class-12-chemistry-chapter-5\/","title":{"rendered":"MCQ Questions for Class 12 Chemistry Chapter 5 Surface Chemistry with Answers"},"content":{"rendered":"

Students are advised to practice the NCERT MCQ Questions for Class 12 Chemistry Chapter 5 Surface Chemistry with Answers Pdf free download is available here. MCQ Questions for Class 12 Chemistry with Answers<\/a> are prepared as per the Latest Exam Pattern. Students can solve these Surface Chemistry Class 12 MCQs Questions with Answers and assess their preparation level.<\/p>\n

Surface Chemistry Class 12 MCQs Questions with Answers<\/h2>\n

Solving the Surface Chemistry Multiple Choice Questions of Class 12 Chemistry Chapter 5 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Surface Chemistry Class 12 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 5 Chemistry Class 12 and cross-check your answers during preparation.<\/p>\n

Question 1.
\nMovement of dispersion medium under the influence of electric field is known as
\n(a) electrodialysis
\n(b) electrophoresis
\n(c) electroosmosis
\n(d) cataphoresis.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) electroosmosis<\/p>\n<\/details>\n

\n

Question 2.
\nAt CMC (Critical Micellisation Cone.) the surface molecules
\n(a) associate
\n(b) dissociate
\n(c) decompose
\n(d) become completely soluble.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) associate<\/p>\n<\/details>\n

\n

Question 3.
\nMilk is an example of
\n(a) emulsion
\n(b) suspension
\n(c) foam
\n(d) sol.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) emulsion<\/p>\n<\/details>\n

\n

Question 4.
\nTyndall effect is due to
\n(a) electric charge
\n(b) scattering of light
\n(c) absorption of light
\n(d) none of these.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) scattering of light<\/p>\n<\/details>\n

\n

Question 5.
\nFog is a colloidal system of
\n(a) liquid dispersed in a gas
\n(b) gas dispersed in a gas
\n(c) solid dispersed in gas
\n(d) solid dispersed in liquid<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) liquid dispersed in a gas<\/p>\n<\/details>\n

\n

Question 6.
\nBlood may be purified by
\n(a) coagulation
\n(b) dialysis
\n(c) electro-osmosis
\n(d) filtration<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) dialysis<\/p>\n<\/details>\n

\n

Question 7.
\nBlue colour of water in sea is due to
\n(a) refraction of blue light by impurities in sea water
\n(b) scattering of light by water
\n(c) refraction of blue sky by water
\n(d) None of these<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) refraction of blue light by impurities in sea water<\/p>\n<\/details>\n

\n

Question 8.
\nThe cause of Brownian movement is
\n(a) heat change in liquid state
\n(b) attractive force between colloidal particles and dispersion medium
\n(c) bombardment of the colloidal particles by the molecules of the dispersion medium
\n(d) interaction of charged particles<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) bombardment of the colloidal particles by the molecules of the dispersion medium<\/p>\n<\/details>\n

\n

Question 9.
\nEmulsifying agent present in milk that makes it stable is
\n(a) maltose
\n(b) casein
\n(c) lactose
\n(d) none of these<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) casein<\/p>\n<\/details>\n

\n

Question 10.
\nCloud is an example of
\n(a) liquid dispersed in gas
\n(b) solid dispersed in gas
\n(c) solid dispersed in liquid
\n(d) none of these<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) liquid dispersed in gas<\/p>\n<\/details>\n

\n

Question 11.
\nThe colour of sky is due to
\n(a) absorption of light
\n(b) transmission of light
\n(c) scattering of light
\n(d) all of these<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) scattering of light<\/p>\n<\/details>\n

\n

Question 12.
\nWhich of the following is lyophobic colloid?
\n(a) Starch in water
\n(b) Gum in water
\n(c) Soap in water
\n(d) Gold sol<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (d) Gold sol<\/p>\n<\/details>\n

\n

Question 13.
\nAt high concentration of soap in water, soap behaves as
\n(a) molecular colloid
\n(b) associated colloid
\n(c) macro molecular colloid
\n(d) lyophilic colloid<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) associated colloid<\/p>\n<\/details>\n

\n

Question 14.
\nThe efficiency of a protective colloid is described in terms of
\n(a) gold number
\n(b) flocculation number
\n(c) valence of counter ion
\n(d) Tyndall effect.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) gold number<\/p>\n<\/details>\n

\n

Question 15.
\nThe function of enzymes in the living system is to
\n(a) maintain pH
\n(b) catalyse biochemical process
\n(c) provide immunity
\n(d) transport oxygen<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) catalyse biochemical process<\/p>\n<\/details>\n

\n

Question 16.
\nThe ultrafiltration process of purification of colloidal solutions is based on:
\n(a) optical properties of colloids
\n(b) electrical properties of colloids
\n(c) magnetic properties of colloids
\n(d) size of colloids<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (d) size of colloids<\/p>\n<\/details>\n

\n

Question 17.
\nIn physical adsorption the forces associated are
\n(a) ionic
\n(b) covalent
\n(c) van der Waals
\n(d) hydrogen bonding<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) van der Waals<\/p>\n<\/details>\n

\n

Question 18.
\nThe colloidal system where liquid is dispersed in solid is
\n(a) Gel
\n(b) Aerosol
\n(c) Emulsion
\n(d) Foam<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) Gel<\/p>\n<\/details>\n

\n

Question 19.
\nWhich one of the following has minimum gold number?
\n(a) Gelatin
\n(b) Starch
\n(c) Gum arabic
\n(d) Sodium oleate<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) Gelatin<\/p>\n<\/details>\n

\n

Question 20.
\nWhich of the following is not a favourable condition for physical adsorption?
\n(a) High pressure
\n(b) -\u0394H
\n(c) High temperature
\n(d) None of these<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) High temperature<\/p>\n<\/details>\n

\n

Question 21.
\nWhich property of colloids is not dependent on the charge on colloidal particles?
\n(a) Coagulation
\n(b) Electro-osmosis
\n(c) Tyndall effect
\n(d) None of these<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) Tyndall effect<\/p>\n<\/details>\n

\n

Question 22.
\nTyndall effect is observed in
\n(a) True solution
\n(b) Precipitate
\n(c) Colloidal solution
\n(d) Vapour<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) Colloidal solution<\/p>\n<\/details>\n

\n

Question 23.
\nIn the coagulation of solution As2<\/sub>S3<\/sub> which has maximum coagulating value
\n(a) NaCl
\n(b) KCl
\n(c) BaCl2<\/sub>
\n(d) AlCl3<\/sub><\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (d) AlCl3<\/sub><\/p>\n<\/details>\n

\n

Question 24.
\nWhich one has the highest coagulating power for ferric hydroxide sol?
\n(a) KCl
\n(b) K2<\/sub>SO4<\/sub>
\n(c) Na3<\/sub>PO4<\/sub>
\n(d) NaCl<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) Na3<\/sub>PO4<\/sub><\/p>\n<\/details>\n

\n

Assertion and Reason Type Questions<\/span><\/p>\n

The questions given below consist of an assertion and a reason. Use the following key to choose the appropriate answer.<\/p>\n

(a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).
\n(b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).
\n(c) Assertion (A) is correct, Reason (R) is wrong statement.
\n(d) Assertion (A) is wrong, but Reason (R) is correct statement.<\/p>\n

Question 25.
\nAssertion: An ordinary filter paper impregnated with collodion solution stops the flow of colloidal particles.
\nReason: Pore size of the filter paper becomes more than the size of colloidal particle.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.<\/p>\n<\/details>\n

\n

Question 26.
\nAssertion: Colloidal solutions show colligative properties.
\nReason: Colloidal particles are large in size.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).<\/p>\n<\/details>\n

\n

Question 27.
\nAssertion: Colloidal solutions do not show brownian motion.
\nReason: Brownian motion is responsible for stability of sols.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (d) Assertion (A) is wrong, but Reason (R) is correct statement.<\/p>\n<\/details>\n

\n

Question 28.
\nAssertion: Coagulation power of Al3+<\/sup> is more than Na+<\/sup>
\nReason: Greater the valency of the flocculating ion added, greater is its power to cause precipitation (Hardy- Schulze rule).<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).<\/p>\n<\/details>\n

\n

Question 29.
\nAssertion: Detergents with low CMC are more economical to use.
\nReason: Cleansing action of detergents involves the formation of micelles. These are formed when the concentration of detergents becomes equal to CMC.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).<\/p>\n<\/details>\n

\n

Hope the information shared regarding the NCERT MCQ Questions for Class 12 Chemistry Chapter 5 Surface Chemistry with Answers Pdf free download is true and genuine as far as our knowledge is concerned. If you feel any information regarding CBSE Class 12 Chemistry Surface Chemistry MCQs Multiple Choice Questions with Answers is missing do reach us and we will look into it and add it accordingly.<\/p>\n","protected":false},"excerpt":{"rendered":"

Students are advised to practice the NCERT MCQ Questions for Class 12 Chemistry Chapter 5 Surface Chemistry with Answers Pdf free download is available here. MCQ Questions for Class 12 Chemistry with Answers are prepared as per the Latest Exam Pattern. Students can solve these Surface Chemistry Class 12 MCQs Questions with Answers and assess …<\/p>\n

MCQ Questions for Class 12 Chemistry Chapter 5 Surface Chemistry with Answers<\/span> Read More »<\/a><\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[35],"tags":[],"yoast_head":"\nMCQ Questions for Class 12 Chemistry Chapter 5 Surface Chemistry with Answers - 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\/mcq-questions-for-class-12-chemistry-chapter-5\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MCQ Questions for Class 12 Chemistry Chapter 5 Surface Chemistry with Answers - NCERT Solutions\" \/>\n<meta property=\"og:description\" content=\"Students are advised to practice the NCERT MCQ Questions for Class 12 Chemistry Chapter 5 Surface Chemistry with Answers Pdf free download is available here. 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