Chemical Engineering - Polymer Technology

11. 

Poly tetra flouro ethylene (PTFE) is known as

A. dacron
B. teflon
C. bakelite
D. celluloid

Answer: Option B

Explanation:

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12. 

Thermosetting resins/polymers as compared to thermoplastic ones are

A. soluble in all organic solvents.
B. more brittle.
C. formed by addition polymerisation only.
D. easily reshaped & reused.

Answer: Option B

Explanation:

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13. 

The generic chemical name for the class of polymers which are commerically known as nylons is

A. polyolefins
B. polyamide
C. polyacrylate
D. polyurathane

Answer: Option B

Explanation:

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14. 

Polycondensation reaction of polymerisation

A. does not produce linear polymers.
B. produces only thermoplastic material.
C. produces epoxy polymers.
D. does not need any catalyst.

Answer: Option C

Explanation:

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15. 

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:

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