set 3 MCQ Questions & Answers Detailed Explanation

Question : 1

Table salt (NaCl) is a product of

a) Strong acid and strong base

b) Weak acid and strong base

c) Weak acid and weak base

d) Strong acid and weak basic

Question : 2

Bleaching powder gives smell of chlorine because it –

a) is a mixture of chlorine and slaked lime

b) is unstable

c) gives chlorine on exposure to atmosphere

d) contains excess of chlorine

Question : 3

Consider the following statements.

1. Anhydrous Sodium bicarbonate is commonly known as baking sodium (baking soda).
2. Baking soda is used as a fire extinguisher.
3. Bleaching powders are produced in Hasnclaver plant.

a) 2 and 3

b) Only 3

c) 1, 2 and 3

d) 1 and 2

Question : 4

Slaked lime is prepared by adding water to –

a) lime water

b) milk of lime

c) bleaching powder

d) quicklime

Question : 5

Plaster of paris is obtained –

a) by heating gypsum to a very high temperature

b) by adding water to calcium sulphate

c) by adding sulphuric acid to calcium hydroxide

d) by heating gypsum to 373 K.

Question : 6

Bleaching powder is soluble in cold water giving a milky solution due to –

a) lime present in it

b) calcium carbonate formation

c) available chlorine

d) the absorption of carbon dioxide from atmosphere