POLYMER TECHNOLOGY QUIZ

Condensation polymerisation of __________ produces bakelite.

Propylene

Urea & formaldehyde

Phenol & acetaldehyde

Phenol & formaldehyde

TRUE ANSWER : ?
YOUR ANSWER : ?

Dacron is a

Condensation polymerisation product of hexamethylene diamine and adipic acid

None of these

Condensation polymerisation product of dimethyl terephthalate (DMT) and ethylene glycol

Thermosetting material

TRUE ANSWER : ?
YOUR ANSWER : ?

Plasticisers are added to synthetic plastics to

Impart flexibility

All of these

Improve workability during fabrication

Develop new improved properties not present in the original resin

TRUE ANSWER : ?
YOUR ANSWER : ?

Polyesters are manufactured by the polycondensation reaction of

Inorganic acid with ethylene glycol

A single monomer

Dibasic acid with dihydric alcohol

Carboxylic acid with ethylene

TRUE ANSWER : ?
YOUR ANSWER : ?

__________ polythene is most prone to stress-cracking

Cross-linked

High density

Linear low density

Low density

TRUE ANSWER : ?
YOUR ANSWER : ?

The synthetic fibres produced from __________ are known as rayon.

Ethylene glycol

Cellulose

Polyamides

Lignin

TRUE ANSWER : ?
YOUR ANSWER : ?

Thermocole is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten

Polyurathane

Either B or C

Saturated polyester

Polystyrene

TRUE ANSWER : ?
YOUR ANSWER : ?

The generic chemical name for the class of polymers which are commerically known as nylons is

Polyolefins

Polyurathane

Polyacrylate

Polyamide

TRUE ANSWER : ?
YOUR ANSWER : ?

Plastic articles are normally produced by __________ moulding.

Shell

Dry sand

Injection

Green sand

TRUE ANSWER : ?
YOUR ANSWER : ?

The inter particle forces between linear chains in nylon-66 are __________ bonds.

None of these

Covalant

Ionic

Hydrogen

TRUE ANSWER : ?
YOUR ANSWER : ?