Question

(ii)
Which
of
the
following
is
not
the
use
of
CaO?

a.
use
in
whitewash

b.
manufacture
of
sodium
carbonate

c.
purification
of
sugar

d.
manufacture
of
dyestuffs​

Answer 1

B. Manufacture of Sodium Carbonate

Please mark my answer as the Brainliest

Answer 2

Answer:

Option B is correct: Manufacture of sodium carbonate

Explanation:

We are given four sentences and asked to find which one is not come under the uses of CaO. It is also called as quick lime.

Let us see the uses of CaO.

• It is used in manufacturing of cement, paper, and high-grade steel.
• It is the cheapest alkali available which is an important ingredient in the manufacturing of caustic soda
• It is used in manufacture of sugar and in manufacturing of dyestuffs.
• It is used in the manufacturing of bleaching powder.
• It is used in preparation of ammonia as well as soda lime.
• It is used as lining in furnaces.
• It is used as basic flux in metallurgy.

These are the uses of CaO. Therefore, manufacture of sodium carbonate is not the use of CaO. Sodium carbonate can be prepared by using Solvay process.