set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

When vinegar reacts with baking soda the gas evolved is

a) oxygen

b) carbon dioxide

c) hydrogen

d) nitrogen dioxide

Question : 2

The acid in gastricjuice is

a) hydrochloric acid

b) acetic acid

c) nitric acid

d) sulphuric acid

Question : 3

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

a) 1

b) 5

c) 7

d) None of these

Question : 4

Common salt besides being used in the kitchen can also be used as the raw material for making

1. Washing soda
2. Bleaching powder
3. Baking soda
4. Slaked lime

a) (i), (ii) and (iv)

b) (i) and (iii)

c) (i) and (ii)

d) (i), (iii) and (iv)

Question : 5

Which of the following is a weak base ?

a) KOH

b) NH₄OH

c) NaOH

d) none of these

Question : 6

Baking soda is

a) Sodium Dihydrogen Carbonate

b) Disodium Hydrogen Carbonate

c) Sodium Hydrogen Carbonate

d) Sodium Carbonate