{"id":8528,"date":"2020-09-19T17:26:31","date_gmt":"2020-09-19T11:56:31","guid":{"rendered":"https:\/\/ncertsolutions.guru\/?p=8528"},"modified":"2021-03-17T16:06:36","modified_gmt":"2021-03-17T10:36:36","slug":"mcq-questions-for-class-10-science-chapter-2","status":"publish","type":"post","link":"https:\/\/ncertsolutions.guru\/mcq-questions-for-class-10-science-chapter-2\/","title":{"rendered":"MCQ Questions for Class 10 Science Chapter 2 Acids, Bases and Salts with Answers"},"content":{"rendered":"

Students are advised to practice the\u00a0<\/span>NCERT MCQ Questions for Class 10 Science Chapter 2 Acids, Bases and Salts with Answers Pdf free download is available here. MCQ Questions for Class 10 Science with Answers<\/a> are prepared as per the Latest Exam Pattern. Students can solve these Acids, Bases and Salts Class 10 MCQs Questions with Answers and assess their preparation level.<\/p>\n

Acids, Bases and Salts Class 10 MCQs Questions with Answers<\/h2>\n

Solving the Acids, Bases and Salts Multiple Choice Questions of Class 10 Science Chapter 2 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Acids, Bases and Salts Class 10 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 2 Science Class 10 and cross-check your answers during preparation.<\/p>\n

Question 1.
\nAssertion: Universal indicator gives green colour with distilled water.
\nReason: pH of distilled water is 7 and it is neutral and universal indicator gives green colour with neutral solution.
\n(a) Both A and R are true and R is the correct explanation of A.
\n(b) Both A and R are true but R is not the correct explanation of A.
\n(c) A is true but R is false.
\n(d) A is false but R is true.
\n(e) Both A and R are false.<\/p>\n

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

(a) Both A and R are true and R is the correct explanation of A.<\/p>\n<\/details>\n

\n

Question 2.
\nNaHCO, formed by reaction of
\n(a) NaOH + H2<\/sub>CO3<\/sub>
\n(b) NaCl + H2<\/sub>CO3<\/sub>
\n(c) Na2<\/sub>CO3<\/sub> + HCl
\n(d) NaOH + Na2<\/sub>CO3<\/sub><\/p>\n

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

(a) NaOH + H2<\/sub>CO3<\/sub><\/p>\n<\/details>\n

\n

Question 3.
\nCalcium phosphate is present in tooth enamel. Its nature is
\n(a) basic
\n(b) acidic
\n(c) neutral
\n(d) amphoteric<\/p>\n

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

(a) basic<\/p>\n<\/details>\n

\n

Question 4.
\nAn aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?
\n(a) Baking power
\n(b) Lime
\n(c) Ammonium hydroxide solution
\n(d) Hydrochloric acid<\/p>\n

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

(d) Hydrochloric acid<\/p>\n<\/details>\n

\n

Question 5.
\nEgg shell is made up of
\n(a) CaCO3<\/sub>
\n(b) CaO
\n(c) Ca(OH)2<\/sub>
\n(d) CaCl2<\/sub><\/p>\n

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

(a) CaCO3<\/sub><\/p>\n<\/details>\n

\n

Question 6.
\nWhich of the following is not a acidic salt?
\n(a) CuSO4<\/sub>
\n(b) NH4<\/sub>Cl
\n(c) FeCl3<\/sub>
\n(d) CH3<\/sub>COONa<\/p>\n

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

(d) CH3<\/sub>COONa<\/p>\n<\/details>\n

\n

Question 7.
\nWhich one of the following types of medicines is used for treating indigestion?
\n(a) Antibiotics
\n(b) Analgesic
\n(c) Antacid
\n(d) Antiseptic<\/p>\n

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

(c) Antacid<\/p>\n<\/details>\n

\n

Question 8.
\nSodium hydroxide turns phenolphthalein solution
\n(a) pink
\n(b) yellow
\n(c) colourless
\n(d) orange<\/p>\n

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

(a) pink<\/p>\n<\/details>\n

\n

Question 9.
\nSodium hydroxide is a
\n(a) weak base
\n(b) weak acid
\n(c) strong base
\n(d) strong acid<\/p>\n

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

(c) strong base<\/p>\n<\/details>\n

\n

Question 10.
\nRain is called acid rain when its:
\n(a) pH falls below 7
\n(b) pH falls below 6
\n(c) pH falls below 5.6
\n(d) pH is above 7<\/p>\n

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

(c) pH falls below 5.6<\/p>\n<\/details>\n

\n

Question 11.
\nTooth enamel is made up of
\n(a) calcium phosphate
\n(b) calcium carbonate
\n(c) calcium oxide
\n(d) potassium<\/p>\n

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

(a) calcium phosphate<\/p>\n<\/details>\n

\n

Question 12.
\nWhat is the pH range of human body?
\n(a) 7.0 \u2013 7.8
\n(b) 7.2 \u2013 8.0
\n(c) 7.0 \u2013 8.4
\n(d) 7.2 \u2013 8.4<\/p>\n

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

(a) 7.0 \u2013 7.8<\/p>\n<\/details>\n

\n

Question 13.
\nA drop of liquid sample was put on the pH paper, paper turned blue. The liquid sample must be of
\n(a) Lemon Juice
\n(b) HCl
\n(c) Sodium bicarbonate
\n(d) Ethanoic acid.<\/p>\n

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

(c) Sodium bicarbonate<\/p>\n<\/details>\n

\n

Question 14.
\nLime water reacts with chlorine to give
\n(a) bleaching powder
\n(b) baking powder
\n(c) baking soda
\n(d) washing soda<\/p>\n

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

(c) baking soda<\/p>\n<\/details>\n

\n

Question 15.
\nAt what temperature is gypsum heated to form Plaster of Paris?
\n(a) 90\u00b0C
\n(b) 100\u00b0C
\n(c) 110\u00b0C
\n(d) 120\u00b0C<\/p>\n

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

(b) 100\u00b0C<\/p>\n<\/details>\n

\n

Question 16.
\nNa2<\/sub>CO3 <\/sub>. 10H2<\/sub>O is
\n(a) washing soda
\n(b) baking soda
\n(c) bleaching powder
\n(d) tartaric acid<\/p>\n

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

(a) washing soda<\/p>\n<\/details>\n

\n

Question 17.
\nSodium carbonate is a basic salt because it is a salt of a
\n(a) strong acid and strong base
\n(b) weak acid and weak base
\n(c) strong acid and weak base
\n(d) weak acid and strong base<\/p>\n

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

(d) weak acid and strong base<\/p>\n<\/details>\n

\n

Question 18.
\nTomato is a natural source of which acid?
\n(a) Acetic acid
\n(b) Citric acid
\n(c) Tartaric acid
\n(d) Oxalic acid<\/p>\n

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

(d) Oxalic acid<\/p>\n<\/details>\n

\n

Question 19.
\nBrine is an
\n(a) aqueous solution of sodium hydroxide
\n(b) aqueous solution of sodium carbonate
\n(c) aqueous solution of sodium chloride
\n(d) aqueous solution of sodium bicarbonate<\/p>\n

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

(c) aqueous solution of sodium chloride<\/p>\n<\/details>\n

\n

Question 20.
\nWhat is formed when zinc reacts with sodium hydroxide?
\n(a) Zinc hydroxide and sodium
\n(b) Sodium zincate and hydrogen gas
\n(c) Sodium zinc-oxide and hydrogen gas
\n(d) Sodium zincate and water<\/p>\n

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

(b) Sodium zincate and hydrogen gas<\/p>\n<\/details>\n

\n

Question 21.
\nWhen hydrogen chloride gas is prepared on a humid day, the gas is usually passed through the guard tube containing calcium chloride. The role of calcium chloride taken in the guard tube is to
\n(a) absorb the evolved gas
\n(b) moisten the gas
\n(c) absorb moisture from the gas
\n(d) absorb Cl\u2013<\/sup> ions from the evolved gas<\/p>\n

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

(c) absorb moisture from the gas<\/p>\n<\/details>\n

\n

Question 22.
\nPlaster of Paris is made from
\n(a) Lime stone
\n(b) Slaked Lime
\n(c) Quick lime
\n(d) Gypsum<\/p>\n

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

(d) Gypsum<\/p>\n<\/details>\n

\n

Question 23.
\nAssertion: Bleaching power liberate chlorine when kept in atmosphere.
\nReason: CaOCl2<\/sub> reacts with CO2<\/sub> present in atmosphere to form CaCO3<\/sub> and chlorine gas.
\n(a) Both A and R are true and R is the correct explanation of A.
\n(b) Both A and R are true but R is not the correct explanation of A.
\n(c) A is true but R is false.
\n(d) A is false but R is true.
\n(e) Both A and R are false.<\/p>\n

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

(a) Both A and R are true and R is the correct explanation of A.<\/p>\n<\/details>\n

\n

Question 24.
\nAssertion: Ammonium hydroxide is Weak Base
\nReason: Phenolphthalein becomes pink in NH2OH
\n(a) Both A and R are true and R is the correct explanation of A.
\n(b) Both A and R are true but R is not the correct explanation of A.
\n(c) A is true but R is false.
\n(d) A is false but R is true.
\n(e) Both A and R are false.<\/p>\n

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

(b) Both A and R are true but R is not the correct explanation of A.<\/p>\n<\/details>\n

\n

Question 25.
\nAg2<\/sub>S reacts with H2<\/sub>SO4<\/sub> to form
\n(a) AgSO4<\/sub>
\n(b) Ag2<\/sub>SO4<\/sub> + H2<\/sub>S
\n(c) Ag2<\/sub>O + H2<\/sub>S
\n(d) AgOH + H2<\/sub>S<\/p>\n

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

(b) Ag2<\/sub>SO4<\/sub> + H2<\/sub>S<\/p>\n<\/details>\n

\n

Question 26.
\nA sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the pH paper yellowish-orange. Which of the following would change the colour of this pH paper to greenish-blue?
\n(a) Lemon juice
\n(b) Vinegar
\n(c) Common salt
\n(d) An antacid<\/p>\n

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

(d) An antacid<\/p>\n<\/details>\n

\n

Question 28.
\nWhich of the following salts does not contain water of crystallisation?
\n(a) Blue vitriol
\n(b) Baking soda
\n(c) Washing soda
\n(d) Gypsum<\/p>\n

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

(b) Baking soda<\/p>\n<\/details>\n

\n

Question 29.
\nHow many water molecules does hydrated calcium sulphate contain?
\n(a) 5
\n(b) 10
\n(c) 7
\n(d) 2<\/p>\n

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

(d) 2<\/p>\n<\/details>\n

\n

Question 30.
\n10 mL of a solution of NaOH is found to be completely neutralized by 8 mL of a given solution of HCl. If we take 20 mL of same solution of NaOH, the amount of HCl solution required to neutralize it will be
\n(a) 4 mL
\n(b) 8 mL
\n(c) 12 mL
\n(d) 16 mL<\/p>\n

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

(d) 16 mL<\/p>\n<\/details>\n

\n

Question 31.
\nAn aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?
\n(a) Baking powder
\n(b) Lime
\n(c) Ammonium hydroxide solution
\n(d) Hydrochloric acid<\/p>\n

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

(d) Hydrochloric acid<\/p>\n<\/details>\n

\n

Question 32.
\nSodium hydroxide is used
\n(a) as an antacid
\n(b) in manufacture of soap
\n(c) as a cleansing agent
\n(d) in alkaline batteries<\/p>\n

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

(b) in manufacture of soap<\/p>\n<\/details>\n

\n

Question 33.
\nA solution reacts with crushed egg-shells to give a gas that turns lime-water milkey. The solution contains
\n(a) NaCl
\n(b) HCl
\n(c) LiCl
\n(d) KCl<\/p>\n

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

(b) HCl<\/p>\n<\/details>\n

\n

Question 34.
\nWhen copper oxide and dilute hydrochloric acid react, colour changes to
\n(a) white
\n(b) bluish-green
\n(c) blue-black
\n(d) black<\/p>\n

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

(b) bluish-green<\/p>\n<\/details>\n

\n

Question 35.
\nIf pH of solution is 13, it means that if is
\n(a) Weakly acidic
\n(b) Weakly basic
\n(c) Strongly acidic
\n(d) Strongly Basic<\/p>\n

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

(d) Strongly Basic<\/p>\n<\/details>\n

\n

Question 36.
\nNettle sting is a natural source of which acid?
\n(a) Metiwanoic acid
\n(b) Lactic acid
\n(c) Citric acid
\n(d) Tartaric acid<\/p>\n

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

(a) Metiwanoic acid<\/p>\n<\/details>\n

\n

Question 37.
\nAlkalis are
\n(a) acids, which are soluble in water
\n(b) acids, which are insoluble in water
\n(c) bases, which are insoluble in water
\n(d) bases, which are soluble in water<\/p>\n

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

(d) bases, which are soluble in water<\/p>\n<\/details>\n

\n

Question 38.
\nPlaster of Paris hardens by
\n(a) Giving off CO2<\/sub>
\n(b) Changing into
\n(c) Combining with water CaCO3<\/sub>
\n(d) Giving out water<\/p>\n

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

(c) Combining with water<\/p>\n<\/details>\n

\n

Question 39.
\nThe odour of acetic acid resembles that of
\n(a) Rose
\n(b) Burning Plastic
\n(c) Vinegar
\n(d) Kerosene<\/p>\n

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

(c) Vinegar<\/p>\n<\/details>\n

\n

Question 40.
\nThe H+<\/sup> ion concentration of a solution is 1.0\u00d710-5<\/sup>m. The solution is
\n(a) Acidic
\n(b) Alkaline
\n(c) Neutral
\n(d) Amphoteric<\/p>\n

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

(a) Acidic<\/p>\n<\/details>\n

\n

Question 41.
\nIn terms of acidic strength, which one of the following is in the correct increasing order?
\n(a) Water < Acetic acid < Hydrochloric acid
\n(b) Water < Hydrochloric acid < Acetic acid
\n(c) Acetic acid < Water < Hydrochloric acid
\n(d) Hydrochloric acid < Water < Acetic acid<\/p>\n

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

(a) Water < Acetic acid < Hydrochloric acid<\/p>\n<\/details>\n

\n

Question 42.
\nAn aqueous solution with pH-zero is
\n(a) Acidic
\n(b) Alkaline
\n(c) Neutral
\n(d) Amphoteric<\/p>\n

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

(a) Acidic<\/p>\n<\/details>\n

\n

Question 43.
\nWhich one of the following salts does not con-tain water of crystallisation?
\n(a) Blue vitriol
\n(b) Baking soda
\n(c) Washing soda
\n(d) Gypsum<\/p>\n

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

(b) Baking soda<\/p>\n<\/details>\n

\n

Question 44.
\nThe or dour of acetic acid resembles that of
\n(a) Rose
\n(b) Burning Plastic
\n(c) Vinegar
\n(d) Kerosene<\/p>\n

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

(c) Vinegar<\/p>\n<\/details>\n

\n

Question 45.
\nSetting of Plaster of Paris takes place due to
\n(a) Oxidation
\n(b) Reduction
\n(c) Dehydration
\n(d) Hydration<\/p>\n

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

(d) Hydration<\/p>\n<\/details>\n

\n

Question 46.
\nChemical formula of baking soda is:
\n(a) MgSO4<\/sub>
\n(b) Na2CO3<\/sub>
\n(c) NaHCO3<\/sub>
\n(d) MgCO3<\/sub><\/p>\n

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

(c) NaHCO3<\/sub><\/p>\n<\/details>\n

\n

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Students are advised to practice the\u00a0NCERT MCQ Questions for Class 10 Science Chapter 2 Acids, Bases and Salts with Answers Pdf free download is available here. MCQ Questions for Class 10 Science with Answers are prepared as per the Latest Exam Pattern. Students can solve these Acids, Bases and Salts Class 10 MCQs Questions with …<\/p>\n

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