Question

Which polymer is used in the manufacture of paints and lacquers?
A. Bakelite
B. Glyptal
C. Polypropene
D. Polyvinyl chloride

Answer 1

Hint: Each polymer has a different function. Some paints contain volatile organic compounds such as esters. Hence, the correct answer will be an option which possesses an ester group.

 Complete step by step answer:
 The polymer used in the manufacture of paints and lacquers is Glyptal. It is also used as a binding material and in preparation of mixed plastics. It is an alkyl resin. It is a copolymer of ethylene glycol and phthalic acid. It is obtained by condensation polymerisation and is a polyester.
In the formation of Glyptal, H atom of hydroxyl group of ethylene glycol combines with hydroxyl group of carboxylic function group of phthalic acid and a molecule of water is eliminated.
Bakelite is used in making combs, phonograph records, handles of various utensils and electrical switches. It is a copolymer of phenol and formaldehyde. It is prepared by condensation polymerisation.
Polypropene is used in manufacture of pipes, carpet fibres, ropes and toys. It is also used in storage battery tanks. It is a homo polymer of propylene.
Polyvinyl chloride is used in the manufacture of raincoats, water pipes, electrical insulation, vinyl flooring and handbags. It is a homopolymer of vinyl chloride.

Hence, the option B. is the correct answer.

Note:
Do not mix the functions of different polymers. Each polymer has a specific function. Out of the four options, only one polymer is used in the manufacture of paints and lacquers, remaining three polymers have different functions.