Polymer Technolgy MCQs

Question 1

Bakelite (phenol-formaldehyde) resin can not be used as

Accepted Answer

Decorative paint

Answer

Decorative laminates

Answer

Electrical insulation

Answer

Glass reinforced plastics

Question 2

Flexible plastic pipes are made of

Accepted Answer

Low density polyethylene (LDPE)

Answer

High density polyethylene (HDPE)

Answer

Polypropylene

Answer

Unsaturated polyester

Question 3

Synthetic polymer produced by using terephthalic acid and ethylene glycol is

Accepted Answer

Terylene

Answer

Nylon-66

Answer

PVC

Answer

Polyesterene

Question 4

The organic acid monomer in nylon 66 is

Accepted Answer

Adipic acid

Answer

Sebasic acid

Answer

Terephthalic acid

Answer

Benzoic acid

Question 5

Paper like thin plastic articles can be produced by

Accepted Answer

Vacuum thermo forming

Answer

Blow moulding

Answer

Injection moulding

Answer

None of these

Question 6

Pick out the correct statement.

Accepted Answer

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

Answer

Plastics are good conductors of heat and electricity

Answer

All the polymers are highly crystalline in nature

Answer

Polymers can be vaporised by heating to a very high temperature

Question 7

Which of the following is not a natural polymer?

Accepted Answer

Polyurethane

Answer

Nucleic acids e.g. RNA and DNA

Answer

Polysaccharides

Answer

Polyisoprene

Question 8

Which of the following is stretched into fibres?

Accepted Answer

Saturated polyester

Answer

Unsaturated polyester

Answer

Isoprene

Answer

Bakelite

Question 9

Addition of stabiliser during PVC manufacture is done to

Accepted Answer

Prevent its thermal degradation

Answer

Improve its impact strength

Answer

Improve its elasticity

Answer

Reduce the melt viscosity & glass transition temperature