Chemical Engineering - Polymer Technology

1. 

Identify the group in which all the polymers mentioned can be used to make fibres.

A. Butadiene copolymers, Polyamides, Urea aldehyde
B. Cellulose derivatives, Polyisoprene, Polyethylene
C. Cellulose derivatives, Polyamides, Polyurathane
D. Polypropylene, Poly vinyl chloride, Silicon

Answer: Option B

Explanation:

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2. 

Molecular weights of plastics ranges from

A. 1000 to 5000
B. 5000 to 1000
C. 20000 to 25000
D. 109 to l011

Answer: Option C

Explanation:

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3. 

Non sulphonated hard bakelites are not used for making

A. ion-exchange resins
B. fountain pen barrels
C. formica table tops
D. combs

Answer: Option A

Explanation:

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4. 

Which of the following is not present in bagasse fibre ?

A. Cellulose
B. Lignin
C. Pentogens
D. None of these

Answer: Option D

Explanation:

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5. 

Epoxy resin is

A. not used for surface coating.
B. a good abrasive.
C. an elastomer.
D. a polyester.

Answer: Option B

Explanation:

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