Question

Polymers of the type $ Z-{M_n}{\text{ }}-Y $ , i.e. those which contain a foreign molecule in addition to the recurring unit are known as:
(A) Telomeres
(B) Atactic polymers
(C) Semisynthetic polymers
(D) Plasticizer

Answer 1

Hint :Polymers are products made up of long chains of molecules that replicate themselves. Based on the form of molecules bound and how they are bonded, the products have distinct properties. Rubber and polyester are two polymers that bend and stretch. Epoxies and glass, for example, are rough and durable.

Complete Step By Step Answer:
Atactic Polymer:
Most polymers produced by free-radical mechanisms, such as polyvinyl chloride, are atactic. Amorphous atactic polymers are amorphous due to their spontaneous origin. Any other repeat unit in hemi isotactic macromolecules has a spontaneous substituent. Amorphous and less compact than their crystalline syndiotactic or isotactic counterparts, atactic polymers are normally amorphous.
Semisynthetic polymers:
Rayon and other cellulose derivatives such as cellulose nitrate, cellulose acetate, and others are semi-synthetic polymers. These are thermoplastic polymers. Cellophane is a type of viscose rayon that comes in the shape of a thin translucent film. Glycerol is used to soften cellophane.
Plasticizer:
A plasticizer is a solvent that is applied to a substrate to make it smoother and more durable, increase its plasticity, reduce viscosity, or reduce friction during manufacturing.
Telomeres:
Telomeres are polymers of the type $ Z-{M_n}{\text{ }}-Y $ that contain a foreign molecule in addition to the repeating unit, and telomerization is the mechanism by which they are formed. It's a very thin polymer, with a degree of polymerization ranging between 2 and 5.
Hence, option A is correct.

Note :
Polymerization, also known as polymerisation, is the mechanism of combining monomer molecules in a chemical reaction to form polymer chains or three-dimensional networks in polymer chemistry. There are several different types of polymerization, and different classification schemes exist to classify them.