Polymer Technology MCQs

Carbon

Alkylated diphenyl amine

Thiokol

Magnesium

Plastics are good conductors of heat and electricity.

All the polymers are highly crystalline in nature

Polymers can be vaporised by heating to a very high temperature.

The liquid polymer becomes greasy, then waxy and finally solid on increasing the degree of polymerisation.

nylon-6

nylon-66

polystyrene

PVC

polyamide

polystyrene

polyester

polyacrylonitrile

molecular sizes.

magnitude of intermolecular forces.

resistance to heat.

polymerisation mechanism.

mattresses & foam

coating material

adhesives

bottles

sebasic acid

terephthalic acid

adipic acid

benzoic acid

protect rubber goods from attack by oxygen & ozone present in the atmosphere.

reduce its viscosity to permit easier processing.

reduce the time of vulcanisation and quantity of vulcanising agent.

increase its viscosity.

harder

tougher

chemically inert

more flexible

expanded polystyrene

saturated polyester

perspex

PVC