Polymer Technolgy MCQs

Question 1

Poly tetra flouro ethylene (PTFE) is known as

Accepted Answer

Teflon

Answer

Dacron

Answer

Bakelite

Answer

Celluloid

Question 2

The major constituent of laminate of safety glass, which holds the broken glass, pieces in their places during accident (and thus minimises the danger from flying glass fragments) is

Accepted Answer

Polyvinyl butyral

Answer

Polyvinyl alcohol

Answer

Polyvinyl acetale

Answer

PVC

Question 3

Melamine formaldehyde resin which has a very high anti tacking properties, is not used for the

Accepted Answer

Strengthening of plaster of paris

Answer

Electrical insulation purpose

Answer

Tanning of leather

Answer

Decorative laminates

Question 4

Liners of bags are usually made of

Accepted Answer

Polypropylene

Answer

Polythene

Answer

PVC

Answer

Polyesters

Question 5

Visco-elastic behaviour exhibited by plastics is a __________ like behaviour.

Accepted Answer

Combination of solid & liquid

Answer

Solid

Answer

Liquid

Answer

Neither solid nor liquid

Question 6

Styrene butadiene rubber is commercially manufactured by

Accepted Answer

Emulsion polymerisation

Answer

Bulk polymerisation

Answer

Suspension polymerisation

Answer

Solution polymerisation

Question 7

Styrene which is a monomer for the production of polystyrene, is commercially produced by the

Accepted Answer

Catalytic dehydrogenation of ethyl benzene

Answer

Dehydration of ethyl alcohol followed by hydrogenation

Answer

Reacting ethylene oxide with acetal-dehyde

Answer

Fermentation of starch

Question 8

Pick out the wrong statement.

Accepted Answer

Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available

Answer

For the manufacture of styrene, the major raw materials are benzene and ethylene

Answer

One inportant copolymer of styrene is SBR, which is widely used in the manufacture of automobile tyres

Answer

Manufacture of phenol by chloroben-zene-eaustic process involves. The chlorination of benzene, causticisation and hydrolysis

Question 9

Which of the following is not a condensation polymer?

Accepted Answer

Polymethylmethacrylate (PMMA)

Answer

Bakelite

Answer

Melamine polymer

Answer

None of these