Chemical Engineering - Polymer Technology

26. 

Cellulose content in bomboo fibre is about __________ percent.

A. 10
B. 20
C. 50
D. 85

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

27. 

In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of

A. cross linked polystyrene.
B. phenol formaldehyde resins.
C. polyesters.
D. polyamides.

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

28. 

Which of the following has the weakest intermolecular forces ?

A. Polyisoprene
B. Nylon-66
C. Polystyrene
D. Bakelite

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

29. 

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. Let us discuss.

30. 

In condensation polymerisation as compared to addition polymerisation

A. the monomers are unsaturated compounds.
B. no co-product is lost.
C. the monomers contain two functional groups.
D. generally only one monomer is involved

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.