Question

Match the given products obtained in the chlor-alkali process with their uses.

Products	Uses
1) Hydrogen	A) Manufacture of soap
2) Chlorine	B) Used as fuel
3) Sodium hydroxide	C) Used as disinfectant of drinking water

Answer 1

When electricity is passed through an aqueous solution of sodium chloride (known as brine), it decomposes to form sodium hydroxide. This process is called chlor-alkali process.
The reaction involved is:
$2NaCl\left(aq\right)+2H_{2}O\left(l\right)\to 2NaOH\left(aq\right)+C{l}_2\left(g\right)+H_2\left(g\right)$

Uses of the products formed by chlor-alkali process are:

Products	Uses
Hydrogen	Used as fuel
Chlorine	Used as disinfectant of drinking water
Sodium hydroxide	Manufacture of soap