Polymer Technolgy MCQs

Question 1

Neoprene is rendered non-inflammable, because of

Accepted Answer

The presence of chlorine atoms in its monomer

Answer

Its cross-linked structure

Answer

Its linear chain structure

Answer

The absence of chlorine atoms in its monomer

Question 2

Molecular weights of plastics ranges from

Accepted Answer

20000 to 25000

Answer

1000 to 5000

Answer

5000 to 1000

Answer

10 9 to 10 11

Question 3

Elastomers are

Accepted Answer

Having high flexural strength

Answer

Thermosetting material

Answer

Exemplified by protein derivatives

Answer

Having very high tensile strength and heat resistance

Question 4

Non sulphonated hard bakelites are not used for making

Accepted Answer

Ion-exchange resins

Answer

Fountain pen barrels

Answer

Formica table tops

Answer

Combs

Question 5

Polyhexamethylene adipimide is also known as

Accepted Answer

Nylon-66

Answer

Bakelite

Answer

Epoxy resin

Answer

Silicone rubber

Question 6

Polymerisation process in which two or more monomers of chemically different nature take part is called

Accepted Answer

Copolymerisation

Answer

Addition polymerisation

Answer

Chain polymerisation

Answer

None of these

Question 7

Cellulose is the main contituent of most __________ fibres.

Accepted Answer

Natural

Answer

Acrylic

Answer

Spandex

Answer

Synthetic

Question 8

Neoprene is chemically known as

Accepted Answer

Poly chloroprene

Answer

Polybutandiene

Answer

Styrene butadiene rubber (SBR)

Answer

Polyurethane

Question 9

Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from __________ resins.

Accepted Answer

Urea formaldehyde

Answer

Epoxy

Answer

Phenol formaldehyde

Answer

Melamine formaldehyde