Question

Which of the following polymers is condensation as well as cross-linked polymer?
A.Bakelite
B.Nylon-6.6
C.Nylon-2..Nylon-6
D.Dacron

Answer 1

Hint:
Plastic is an important invention in chemistry. It is an important organic component that is mainly used in everyday life. It can easily change one shape into another due to its flexibility property.

Complete step by step answer:
Plastic is a synthetic compound that is malleable and ductile. The word 'plastic' taken from the Greek, that meaning is 'capable of being shaped or molded'. Mostly, plastic contains a polymer formed by the atom of carbon, sulfur, oxygen. It is distinguished by its physical properties, like strength, hardness, density, etc. It is synthesized by some processes like Polyaddition, Cross-linking, condensation.
Polyaddition - In this process, when the polymer is formed in only one reaction. And we can say that when a reaction happens between the molecule and functional group with low degree polymerization. Example - oligomer, trimers, etc.
Cross-linking - When one polymer chains into another polymer. During this, it forms a covalent and ionic bond.
Condensation - When molecules are joined by losing small molecules.
Bakelite is the only polymer formed by condensation and cross-linked. It is formed by phenol and formaldehyde monomers. In this process zinc chloride, base ammonia, and hydrochloric acid.

Therefore, option A is the correct answer here.

Note: There are two types of plastic that are Thermoplastics and Thermosetting. Thermoplastic - It can be changed after the melting. Thermosetting - Its shape cannot change after the melting. Plastic first synthesis in Bakelite. It is used to manufacture handles, jewels, toys, pipes, etc.