Chemical Engineering - Chemical Process

1. 

Pick out the wrong statement.

A. Pasteurisation of milk involves moderate heating followed by cooling.
B. Bakeries and breweries make use of yeasts.
C. Enzyme is a complex nitrogenous compound.
D. Oils and fats are alkaloids.

Answer: Option D

Explanation:

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2. 

Which of the following, when pyrolysed, produces perchloro-ethylene ?

A. Ethylene dichloride
B. Chlorobenzene
C. Carbon tetrachloride
D. Chlorinated paraffin

Answer: Option C

Explanation:

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3. 

Chemical name of aspirin (an analgesic drug) is

A. acetylsalicylic acid
B. nictonic acid
C. calcium acetate
D. methyl salicylate

Answer: Option A

Explanation:

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4. 

Which is the most efficient absorbant for SO3 out of the following ?

A. 20% oleum
B. 65% oleum
C. 78%H2SO4
D. 98%H2SO4

Answer: Option D

Explanation:

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5. 

Coal tar is used as a

A. binding material for coal briquettes.
B. fuel in rotary kiln.
C. binder in making carbon electrodes.
D. all (a), (b) and (c).

Answer: Option D

Explanation:

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