Question

Which of the following groups contain all synthetic substances?
(A) Nylon, Terylene, Wool
(B) Cotton, Polycot, Rayon
(C) PVC, Polythene, Bakelite
(D) Acrylic, Silk, Wool

Answer 1

As we all know that the polymer is large molecules having high molecular mass and repeated structural units called monomers and we can classify them as natural, synthetic and semi-synthetic polymers. Synthetic polymers are the substances that are man-made, derived from petroleum oils and extensively used in daily life as well as industry.

Complete step by step solution: As we know that polymers are large molecules having high molecular mass and repeated structural units called monomers and we can classify them as natural, synthetic and semi-synthetic polymers. Synthetic polymers are the substances that are man-made, derived from petroleum oils and extensively used in daily life as well as industry. Let us discuss the given polymers one by one.
Nylon was the first commercially successful synthetic thermoplastic polymer possessing amide linkage and Nylon 6, 6 can be prepared by the condensation polymerisation of hexamethylenediamine with adipic acid under the conditions like high pressure and temperature and Nylon 6 can also be prepared by heating caprolactam with water usually at high temperature.
Let us talk about Terylene, which is a synthetic polyester fibre prepared by polymerization of ethylene glycol and terephthalic acid. Wool is also a fibre obtained from sheep and other animals and cotton is also a soft, fluffy staple fibre that grows in a capsule like structure around the seeds of cotton plants.
We also know that Rayon is a semi-synthetic polymer which is derived from natural cellulose and polycot is a mixture of cotton and polyester.
PVC or polyvinyl chloride is prepared from vinyl chloride and is the third major produced synthetic plastic polymer. The comes polythene which is also synthetic and is of two types, low density polythene which is prepared by polymerization of ethane under high pressure and temperature and the other one is high density polythene prepared when addition polymerization of ethane takes place in a hydrocarbon solvent in presence of Ziegler-Natta catalyst.
And finally we will talk about Bakelite which is the first plastic made from synthetic components which are phenol and formaldehyde. It is used for making combs, electrical switches, handles of utensils and computer discs etc.

Therefore from the above explanation we can say that the correct answer is (C).

Note: Synthetic polymers are light weighted and economically less expensive substances and we use these substances in our daily lives from clothing to kitchen and storage. They are also used in soil aeration substances for more permeability of water and minerals.