Polymers

Natural Polymer among the following is

• Cellulose

• Cellulose acetate

• Rubber

• Rubber and Cellulose

• All Rubber, Cellulose and Cellulose acetate

The correct flow of steps of Addition Polymerisation are

• Chain Initiation > Chain Propagation > Chain Termination

• Chain Initiation > Chain Termination > Chain Propagation

• Chain Propagation > Chain Initiation > Chain Termination

• None of these

Polytetrafluoroethene is also called

• Polyethene

• Polystyrene

• Teflon

• Terelene

Terylene is also called

• Teflon

• Dacron

• Nylon

• None of these

Hexamethylenediamine and adipic acid combines to form

• Buna S

• Buna N

• Nylon 6

• Nylon 6,6

Phenol – formaldehyde polymer is also called

• 1.Novolac

• 2.Melamine

• 3.Bakelite

• Both 1. and 3.

For valcanisation, the metal added to rubber is

• Phosphorous

• Sulphur

• Bromine

• Nitrogen

the compound common to both Buna S and Buna N is

• Styrene

• acrylonitrile

• 1, 3 – butadiene

• 2 - Chloro-1, 3 – butadiene

An example of biodegradable polymer is

• 3-hydroxybutanoic acid

• 3 - hydroxypentanoic acid

• Poly β-hydroxybutyrate – co-β-hydroxy valerate

• None of these

Paints and lacquers are prepared using

• Polystyrene

• Glyptal

• Bakelite

• Melamine