set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Which one of the following salts when dissolved in water makes the solution basic?

a) Ferric chloride

b) Sodium chloride

c) Copper sulphate

d) Sodium acetate

Question : 2

The chemical formula of washing soda is

a) Na₂CO₃

b) NaHCO₃

c) NaOH

d) Ca(OH)₂

Question : 3

To protect tooth decay we are advised to brush our teeth regularly. The nature of the tooth paste commonly used is

a) neutral

b) basic

c) acidic

d) corrosive

Question : 4

Plaster of Paris hardens by –

a) changing into CaCO₃

b) combining with water

c) giving of CO₂

d) giving out water

Question : 5

Antacids contain –

a) weak acid

b) strong base

c) weak base

d) strong acid

Question : 6

Reaction of an acid with a base is known as –

a) combination

b) redox reaction

c) decomposition

d) neutralization