set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Which one among the following is an electrochemical cell that cannot be charged ?

a) Primary cell

b) Electrolytic cell

c) Storage cell

d) Fuel cell

Question : 2

Which of the following is a strong base?

a) Sodium hydroxide (NaOH)

b) Water (H₂O)

c) Ammonium hydroxide (NH₄OH)

d) Sulfuric acid (H₂ SO₄)

Question : 3

On the labels of the bottles, some soft drinks are claimed to be acidity regulators. They regulate acidity using

a) Bicarbonate salts

b) Carbon dioxide

c) Carbon dioxide and lime

d) Both (a) and (b)

Question : 4

The acid in gastricjuice is

a) hydrochloric acid

b) acetic acid

c) nitric acid

d) sulphuric acid

Question : 5

When vinegar reacts with baking soda the gas evolved is

a) oxygen

b) carbon dioxide

c) hydrogen

d) nitrogen dioxide

Question : 6

An unknown gas quickly dissolves in water. This gaseous aqueous solution turns red litmus into the blue. This gas produces hydrogen chloride with a white flame. This unknown gas is

a) Nitric hydroxide

b) Ammonia

c) Sulphur dioxide

d) Carbon monoxide