Phenol formaldehyde __________________?

Question: In step growth polymerisation, condensation occurs in a stepwise manner with or without the elimination of smaller molecules. An example of step growth polymerisation product is
[A].

terylene

[B].

polybutadiene

[C].

PVC

[D].

polypropylene

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: 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.