CBSE Class 10 Science 2020 · Paper 31/1/1 · Question 16(a)
List the important products of the Chlor-alkali process. Write one important use of each.
Answer
The chlor-alkali process gives hydrogen (fuel), chlorine (water treatment) and sodium hydroxide (soaps and detergents).
The chlor-alkali process is the electrolysis of brine: . Its important products and one use of each:
(1) Hydrogen: as a fuel, or in making margarine or ammonia for fertilisers.
(2) Chlorine: in water treatment and swimming pools, or in making PVC, disinfectants, CFCs or pesticides.
(3) Sodium hydroxide: for de-greasing metals, or in making soaps and detergents, paper or artificial fibres.
One use of each is enough; any other correct use also earns credit.
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