set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

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 : 2

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 : 3

If pH of A, B, C and D are 9.5, 2.5, 3.5 and 5.5 respectively, then strongest acid is

a) C

b) D

c) A

d) B

Question : 4

A solution turns red litmus blue. The pH of solution is

a) 1

b) 5

c) 7

d) None of these

Question : 5

The acid in gastricjuice is

a) hydrochloric acid

b) acetic acid

c) nitric acid

d) sulphuric acid

Question : 6

When vinegar reacts with baking soda the gas evolved is

a) oxygen

b) carbon dioxide

c) hydrogen

d) nitrogen dioxide