Chemical Engineering - Chemical Process

41. 

Carbon content of pitch (residue of coal tar distillation) is around __________ percent.

A. 70
B. 55
C. 80
D. 94

Answer: Option D

Explanation:

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42. 

Sodium salt of higher molecular weight fatty acid is termed as the __________ soap.

A. hard
B. soft
C. metallic
D. lubricating

Answer: Option B

Explanation:

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43. 

Synthetic glycerine is produced from

A. toluene
B. phenol
C. propylene
D. naphthalene

Answer: Option C

Explanation:

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44. 

A 'unit process' is exemplified by the

A. distillation
B. hydrogenation of oils
C. absorption
D. humidification

Answer: Option B

Explanation:

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45. 

Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4 + 4H2, is not practised, as it is

A. a slow reaction.
B. a discontinuous reaction (requiring regeneration of iron by water gas intermittently).
C. still in development stage (by employing fluidised bed technique).
D. all (a), (b) and (c).

Answer: Option D

Explanation:

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