Chemical Engineering - Polymer Technology

46. 

Nitrile rubber is produced by the polymerisation of

A. acrylonitrile & butadiene.
B. acrylonitrile & styrene.
C. isobutylene & isoprene.
D. none of these.

Answer: Option A

Explanation:

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47. 

Celluloid is

A. cellulose acetate
B. regenerated cellulose
C. cellulose nitrate
D. cellulose acetate butyrate

Answer: Option C

Explanation:

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48. 

Styrene butadiene rubber (SBR) as compared to natural rubber has

A. poor tensile strength.
B. poorer resistance.
C. greater amount of heat build up heavy loading.
D. all (a), (b) ana (c).

Answer: Option D

Explanation:

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49. 

Which of the following polymers has the tendency of decomposing before melting ?

A. Polystyrene
B. Nylon
C. PVC
D. None of these

Answer: Option C

Explanation:

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50. 

Which of the following polymers belong to the class of formaldehyde resin ?

A. Melamine resins
B. Teflon
C. Dacron
D. None of these

Answer: Option A

Explanation:

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