1. General Concepts & Properties

1. What is the reaction between an acid and a base called?
   a. Desalination
   b. Crystallisation
   c. Neutralisation
   d. Sublimation
   Ans: c
2. Most liquid conductors are solutions of acids, bases, and:
   a. Copper
   b. Aluminium
   c. Salts
   d. Iron
   Ans: c
3. Which of the following reacts with an acid to produce a fruity smell?
   a. PCl₅
   b. CH₃COCH₃
   c. C₂H₅OH (ethanol)
   d. None of these
   Ans: c
4. What is the pH of pure water?
   a. 7
   b. 5
   c. 3
   d. 1
   Ans: a
5. The pH scale ranges from:
   a. 0–7
   b. 8–14
   c. 0–14
   d. None of these
   Ans: c
6. What is the pH of human blood?
   a. Slightly acidic
   b. Highly acidic
   c. Slightly basic
   d. Highly basic
   Ans: c
7. What is the pH nature of milk?
   a. Slightly acidic
   b. Slightly basic
   c. Highly acidic
   d. Highly basic
   Ans: a
8. What is the nature of an antacid?
   a. Acidic
   b. Basic
   c. Neutral
   d. Strongly acidic
   Ans: b

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2. Chemical Names, Formulas & Identification

9. The chemical name of ‘Oil of Vitriol’ is:
   a. Sulphuric acid
   b. Hydrochloric acid
   c. Phosphoric acid
   d. Nitric acid
   Ans: a
10. The chemical formula of Sodium Chloride is:
    a. NaCl₂
    b. NaCl
    c. Na₂Cl
    d. Na₂C
    Ans: b
11. What is the chemical name of quicklime?
    a. Calcium carbonate
    b. Sodium hydroxide
    c. Calcium oxide
    d. Calcium sulphate
    Ans: c
12. Which of the following is the chemical formula for quicklime?
    a. Ca₂O
    b. Ca₂CO₃
    c. CaO₂
    d. CaO
    Ans: d

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3. Acids in Daily Life

13. Which acid is used in car batteries (lead storage cells)?
    a. Phosphoric acid
    b. Hydrochloric acid
    c. Nitric acid
    d. Sulphuric acid
    Ans: d
14. Which acid is used to dissolve gold?
    a. Hydrochloric acid
    b. Aqua regia
    c. Nitric acid
    d. Phosphoric acid
    Ans: b
15. Which acid is present in apples?
    a. Citric acid
    b. Acetic acid
    c. Malic acid
    d. None of these
    Ans: c
16. Which acid is found in tomatoes?
    a. Oxalic acid
    b. Citric acid
    c. Acetic acid
    d. Malic acid
    Ans: a
17. Which acid is used to make Aspirin?
    a. Acetic acid
    b. Salicylic acid
    c. Succinic acid
    d. Oxalic acid
    Ans: b
18. Aspirin is derived from which natural source?
    a. Willow bark
    b. Oak tree
    c. Acacia
    d. Eucalyptus
    Ans: a
19. Which of the following is a mild acid?
    a. Hydrochloric acid
    b. Nitric acid
    c. Sulphuric acid
    d. Boric acid
    Ans: d
20. Which acid is also known as muriatic acid?
    a. Gallic acid
    b. Picric acid
    c. Muriatic acid
    d. Chloric acid
    Ans: c

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4. Bases & Alkalinity

21. Which base is present in lime water?
    a. Sodium hydroxide
    b. Magnesium hydroxide
    c. Calcium hydroxide
    d. Ammonium hydroxide
    Ans: c
22. Which compound is added in prickly heat powder to reduce sweating?
    a. Boric acid
    b. Phosphoric acid
    c. Carbonic acid
    d. Sulphonic acid
    Ans: a
23. Which oxide turns red litmus blue, indicating basic nature?
    a. Magnesium oxide
    b. Phosphorus oxide
    c. Sulphur dioxide
    d. Carbon dioxide
    Ans: a

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5. Salts & Common Substances

24. What is the common name of sodium bicarbonate?
    a. Baking soda
    b. Washing powder
    c. Plaster of Paris
    d. Fly ash
    Ans: a
25. What is the common name of CaOCl₂?
    a. Baking powder
    b. Baking soda
    c. Bleaching powder
    d. Washing soda
    Ans: c
26. Baking soda is a component of baking powder. What is the other component?
    a. Acetic acid
    b. Hydrochloric acid
    c. Citric acid
    d. Tartaric acid
    Ans: d
27. Which of the following is a common battery acid?
    a. Hydrochloric acid
    b. Sulphuric acid
    c. Nitric acid
    d. Phosphoric acid
    Ans: b
28. In a neutralization reaction, acid + base gives:
    a. Carbon dioxide
    b. Metal oxide
    c. Hydrogen gas
    d. Salt
    Ans: d

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6. Functional Groups & Organic Acids

29. Which of the following does NOT contain a carboxylic group?
    a. Picric acid
    b. Aspirin
    c. Benzoic acid
    d. Ethanoic acid
    Ans: a
30. Which acid is used to manufacture Aspirin?
    a. Acetic acid
    b. Salicylic acid
    c. Oxalic acid
    d. Succinic acid
    Ans: b