Chemical Engineering - Mass Transfer

1. 

Steam distillation is used for separation of high boiling

A. substances from non-volatile impurities.
B. volatile impurity from still higher boiling substances.
C. both (a) and (b).
D. neither (a) nor (b).

Answer: Option C

Explanation:

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2. 

The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will

A. increase
B. decrease
C. remains same
D. depend on saturated boiling point; may increase or decrease

Answer: Option A

Explanation:

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3. 

Rose oil is extracted from rose leaves using __________ distillation.

A. high pressure
B. low pressure
C. extractive
D. steam

Answer: Option D

Explanation:

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4. 

Hypersorption refers to a __________ process.

A. fixed bed absorption
B. moving bed absorption
C. fixed bed adsorption
D. moving bed adsorption

Answer: Option D

Explanation:

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5. 

Which of the following is the correct ternery diagram for liquid-liquid extraction system comprising of two pairs partly soluble (e.g., chlorobenzene-water-methyl ethyl ketone system) ?

A.
B.
C.
D. None of these.

Answer: Option A

Explanation:

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