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Salt and acid- Chemistry MCQs in Hindi

 Chemistry GK in English:- Acids, Bases and Salts


 1.Aqueous solution of acid :-

 A. Turns blue litmus red.

 B. Turns red litmus blue.

 Ans: A. Turns blue litmus red.


 2. Aqueous solution of alkali :-

 A. Turns blue litmus red.

 B. Turns red litmus blue.

 Ans: B. Turns red litmus blue.


 3. Which acid is found in lemon :-

 A. lactic acid

 B. tartaric acid

 C. acetic acid

 D.  Citric Acid

 Ans: D. Citric Acid


 4. Which of the following acid is used to digest our food:-

 A. Hydrochloric acid(HCl)

 B. Nitric acid( HNO₃)

 C. sulfuric acid

 D.  lactic acid

 Ans: A.  Hydrochloric Acid(HCl)


 5. The pH value of an acid is :-

 A.  0

 B.  less than 0

 C.  more than 7 

 D.  less than 7 

 Ans: D. Less than 7



 6. What is the pH value of alkali :-

 A. less than 0 

 B. 0

 C. more than 7

 D. less than 7

 Ans: C. More than 7


 7. Which one of the following acids is used in the purification of gold and silver :-

 A. H₂SO₄

 B. CH₃COOH

 C. HCl

 D.  HNO₃

 Ans: D. HNO₃


 8. Which acid is found in milk :-

 A. Citric Acid

 B. tartaric acid

 C. lactic acid

 D. formic acid

 Ans: C. Lactic Acid


 9. What is the pH value of lemon juice:-

 A.  2.2

 B.  2.4

 C.  2.6

 D.  2.8

 Ans: A. 2.2


 10. Which of the following is used in making gunpowder:-

 A. HNO₃ (Nitric Acid)

 B. KOH  (potassium hydroxide)

 C. ZnO  (Zinc Oxide)

 D. KNO₃  (Potassium Nitrate)

 Ans: D. KNO₃(Potassium Nitrate)


 11. Which element is found in all acids:-

 A. Hydrogen

 B. Carbon

 C. Oxygen

 D. Nitrogen

 Ans: A. Hydrogen


 12. What is formed when acid and base react?

 A. alkali + water

 B. Acid + Water

 C. salt + water

 D. salt + CO₂

 Ans:  C.  Salt + Water


 13. What is the formula of oil of vitriol?

 A. H₂SO₄

 B.  HNO₃

 C.  HCL

 D.  HBr

 Ans: A. H₂SO₄


 14. Which gas is formed when metals react with acids?

 A. Oxygen

 B. carbon dioxide

 C. Sulfur dioxide

 D. Hydrogen

 Ans: D. Hydrogen


 15. Which of the following represents the reaction of a metal and an acid:-

 A. Acid + Metal  =  Base + Hydrogen

 B. Acid + Metal = Salt + Hydrogen

 C. Acid + metal  = salt +  carbon dioxide

 D. Acid + Metal = Acid + Oxygen

 Ans: B. Acid + Metal = Salt + Hydrogen


 16. Which gas is formed when acid is reacted with carbonate:-

 A.  Carbon dioxide

 B. Hydrogen

 C. Oxygen

 D. Nitrogen

 Ans: A. Carbon dioxide


 17. Non-oxy acids are those acids in which:-

 A. Contains oxygen.

 B. do not react with oxygen.

 C. does not contain oxygen.

 D. None of these.

 Ans: C. Oxygen is not present.


 18. Which element is found in all alkali substances:-

 A. Nitrogen

 B. Oxygen

 C. Hydrogen

 D. Iron

 Ans: B. Oxygen


 19. The soluble hydroxide of metal is called :-

 A. Acid

 B. salts

 C. base

 D. alkali

 Ans: D. alkali


 20. The insoluble hydroxide of a metal is called:-

 A. alkali (Bhasma)

 B. alkali

 C. salts

 D. Acid

 Ans: A. Basal (Bhasma)


 21. What is obtained by mixing sodium hydroxide and oil:-

 A. Detergent

 B. Acid

 C. soap

 D. gas

 Ans: C. Soap


 22.Non-metal oxides on mixing with water are obtained:-

 A. alkali

 B. Acid

 C. base

 D. salts

 Ans: B.Acid


 23.According to Arrhenius, acids are those substances whose aqueous solution :-

 A. Gives OH⁺  ion.

 B. loses H⁺  ion.

 C. Gives O⁺ ion.

 D.  gives H⁺ ions.

 Ans: Gives D. H⁺ ion.


 24. According to whom, "An acid is a substance that donates a proton and a base is a substance that accepts a proton."

 A. Lewis

 B. Bronsted -Lowry

 C. Arrenhius

 D. None of these.

 Ans : B. Bronsted-Lowry


 25. According to whom "acids are substances which accept pair of electrons and bases are substances which donate pair of electrons" :-

 A. Arrenhius

 B. Bronsted -Lowry

 C. Lewis

 D. none of these

 Ans: C. Lewis


 26. Which of the following is an example of a weak acid:-

 A. acetic acid (CH₃ COOH)

 B. Hydrochloric acid(HCl)

 C. Sulfuric acid (H₂SO₄)

 D. nitric acid (HNO₃)

 Ans: A. Acetic Acid ( CH₃COOH)

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