Polymer Technolgy MCQs

Question 1

Thermosetting resins/polymers as compared to thermoplastic ones are

Accepted Answer

More brittle

Answer

Soluble in all organic solvents

Answer

Formed by addition polymerisation only

Answer

Easily reshaped & reused

Question 2

Thermosetting polymers as compared to thermoplastic polymers

Accepted Answer

Have three dimensional structure

Answer

Are formed by addition polymerisation

Answer

Have linear structure

Answer

None of these

Question 3

Which of the following is the lowest cost plastic commercially available?

Accepted Answer

Polythene

Answer

Teflon

Answer

Bakelite

Answer

PVC

Question 4

Polystyrene is a light, transparent, thermoplastic material used for making

Accepted Answer

Toys and combs

Answer

Packaging bags

Answer

Non-sticking utensils

Answer

Electrical insulation

Question 5

The physical state in which polymers exist is

Accepted Answer

All of the above

Answer

Melts & rubber like state

Answer

Amorphous glassy state

Answer

Partially crystalline state

Question 6

Polyurathane can not be used to make

Accepted Answer

Fibre reinforced plastic (FRP)

Answer

Automobile cushion

Answer

Thermal insulation in refrigerator

Answer

Coating and adhesive

Question 7

Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m 2 . Which of the following polymers has the maximum film elongation (of the order of 100%)?

Accepted Answer

Polythene

Answer

Water impermeable cellophane

Answer

Cellulose acetate

Answer

Teflon

Question 8

Flexible foam (for mattresses) are usually made of

Accepted Answer

Polyurethanes

Answer

PVC

Answer

Silicone rubber

Answer

Polyamides

Question 9

Bakelite is

Accepted Answer

Same as thermoset phenol formaldehyde

Answer

Same as polytetra flouro ethylene (PTFE)

Answer

An inorganic polymer

Answer

Not a polymer