Chemical Engineering - Chemical Process

6. 

Solvent extracted oil

A. has low free fatty acid content.
B. is odourless.
C. has more of unsaturates.
D. none of these.

Answer: Option D

Explanation:

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7. 

Which of the following is not required in the manufacture of soda ash by Solvay process ?

A. Ammonia
B. Limestone
C. Nitric acid
D. None of these

Answer: Option C

Explanation:

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8. 

Saponification number of an oil or fat

A. gives an idea about its molecular weight.
B. is inversely proportional to its molecular weight.
C. detects its adulteration.
D. all (a), (b) & (c).

Answer: Option D

Explanation:

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9. 

The purpose of tanning in leather industry is to

A. stiffen the leather.
B. smoothen the leather.
C. make it flexible.
D. impart water resistance.

Answer: Option A

Explanation:

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10. 

Lime and soda ash are added to water to remove

A. bicarbonates & sulphates of calcium and magnesium.
B. undersirable taste and odour.
C. bacteria.
D. its corrosiveness.

Answer: Option A

Explanation:

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