Polymer Technology

Question: Acrilan fibres used for making cloth, carpet & blankets, which is a hard, horny & high melting polymeric material is nothing but
[A].

polyacrylonitrile

[B].

polyamide

[C].

saturated polyester

[D].

alkyd resin

Answer: Option A

Explanation:

No answer description available for this question.

Question: Glyptal used in the manufacture of paints & lacquers is a __________ polymer.
[A].

polyamide

[B].

polystyrene

[C].

polyester

[D].

polyacrylonitrile

Answer: Option C

Explanation:

No answer description available for this question.

Question: Liners of bags are usually made of
[A].

polythene

[B].

PVC

[C].

polypropylene

[D].

polyesters

Answer: Option C

Explanation:

No answer description available for this question.

Question: Hot drink (e.g, tea) cups are usually made of
[A].

polystyrene

[B].

polythene

[C].

polypropylene

[D].

PVC

Answer: Option A

Explanation:

No answer description available for this question.

Question: Branched chain polymers compared to linear polymers have higher
[A].

density.

[B].

tensile strength.

[C].

melting point.

[D].

degree of irregularity in atomic packing.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Polypropylene is preferred to polythene, because the former is
[A].

non-inflammable

[B].

harder

[C].

stronger

[D].

both(b) & (c)

Answer: Option D

Explanation:

No answer description available for this question.

Question: Thermosetting polymers as compared to thermoplastic polymers
[A].

are formed by addition polymerisation.

[B].

have three dimensional structure.

[C].

have linear structure.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Vulcanisation of rubber does not increase its
[A].

elasticity

[B].

plasticity

[C].

ductility

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Rayon is superior to cotton in making gauge for wound treatment, because rayon
[A].

is a synthetic polymer.

[B].

does not stick to the wound unlike cotton.

[C].

can absorb over 90% of its own weight of water.

[D].

both (b) and (c).

Answer: Option B

Explanation:

No answer description available for this question.

Question: Properties of a polymer is affected by the
[A].

chain length.

[B].

intermolecular forces.

[C].

branching & cross-linking.

[D].

all (a), (b).

Answer: Option D

Explanation:

No answer description available for this question.