WILLER ACADEMY

Class 10 Science Chapter 2 Quiz

Acids, Bases and Salts

1. Which of the following is a strong acid?
a) Acetic acid b) Hydrochloric acid c) Citric acid d) Carbonic acid

2. The chemical formula for washing soda is:
a) NaHCO₃ b) Na₂CO₃·10H₂O c) CaCO₃ d) Ca(OH)₂

3. Which indicator turns red in acidic solution?
a) Methyl orange b) Phenolphthalein c) Litmus d) Universal indicator

4. Which gas is evolved when dilute HCl reacts with zinc?
a) Oxygen b) Hydrogen c) Nitrogen d) Carbon dioxide

5. Which salt is used for the preparation of plaster of Paris?
a) Sodium chloride b) Calcium sulphate hemihydrate c) Sodium carbonate d) Calcium chloride

6. Define an acid and a base with one example each. (2 marks)

7. What is a neutralization reaction? Give a balanced equation. (2 marks)

8. State three differences between acids and bases. (3 marks)

9. Explain the importance of pH in everyday life with any three examples. (3 marks)

10.
a) Describe the preparation of washing soda from sodium chloride.
b) Write two uses each of baking soda and washing soda. (5 marks)

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