Acids, Bases & Salts Mock Tests

28 questions available

Acids, Bases & Salts Mock Test 1

Questions: 28

Sample Questions

Class 7 Science

When dilute sulphuric acid is added to zinc granules, which gas is evolved?

A Hydrogen

B Oxygen

C Carbon dioxide

D Nitrogen

Class 7 Science

Which indicator turns red in an acidic solution and blue in a basic solution?

A Turmeric

B Litmus

C China rose

D Phenolphthalein

Class 7 Science

Which of the following is a strong base?

A Vinegar

B Sodium hydroxide

C Citric acid

D Acetic acid

Class 7 Science

Antacids are used to neutralise excess acid in the stomach. Which of the following is an antacid?

A Milk of magnesia

B Hydrochloric acid

C Sulphuric acid

D Vinegar

Class 7 Science

What is used to neutralise excessive acid in the stomach?

A Vinegar

B Antacid

C Lemon juice

D Salt

Class 7 Science

Which of the following is a base?

A Sodium hydroxide

B Hydrochloric acid

C Acetic acid

D Citric acid

NDA General Test

The chemical formula of washing soda is:

A NaHCO₃

B Na₂CO₃

C Na₂CO₃·10H₂O

D NaOH

NDA General Test

The chemical name of baking soda is:

A Sodium carbonate

B Sodium bicarbonate

C Sodium hydroxide

D Sodium chloride

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