Question

Describe two important uses of each of the following: (i) caustic soda (ii) sodium carbonate (iii) quicklime.

Answer 1

$\text{Uses of caustic soda:}$

(a) manufacture of soap, artificial silk, paper and other chemicals.
(b) the textile industry for mercerizing cotton fabrics.

$\text{Uses of sodium carbonate:}$

(a) softening hard water.
(b) washing purposes in the laundry.

$\text{Uses of quicklime:}$

(a) in the manufacture of sodium carbonate from NaOH.
(b) as a flux in metallurgy.