Chemical Engineering - Chemical Process

36. 

Calcination of gypsum produces

A. plaster of paris
B. salt cake
C. nitre cake
D. lime

Answer: Option A

Explanation:

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37. 

Phthalic anhydride is produced by the oxidation of

A. naphthalene
B. benzene
C. toluene
D. aniline

Answer: Option B

Explanation:

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38. 

Superior quality laboratory apparatus is made of the __________ glass having low thermal co-efficient of expansion & high chemical resistance.

A. flint
B. soda
C. pyrex
D. potash

Answer: Option C

Explanation:

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39. 

Zeigler process

A. produces high density polyethylene.
B. produces low density polyethylene.
C. uses no catalyst.
D. employs very high pressure.

Answer: Option A

Explanation:

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40. 

Massecuite is

A. used for paper making.
B. used as a cattle feed.
C. highly acidic in nature.
D. none of these.

Answer: Option D

Explanation:

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