Chemical Engineering - Chemical Process

16. 

Lubricating greases are a mixture of

A. mineral oil, soap and additives.
B. mineral oil and metallic soap.
C. mineral oil and fatty oil.
D. fatty oil and metallic soap.

Answer: Option A

Explanation:

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17. 

Metallic soap is __________ salt of fatty acids.

A. sodium
B. potassium
C. both sodium & potassium
D. aluminium or calcium

Answer: Option D

Explanation:

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18. 

Cation exchanger is regenerated usually with

A. NaOH
B. H2SO4
C. hydrazine
D. alum solution

Answer: Option B

Explanation:

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19. 

In contact process, SO3 is absorbed in 97% H2SO4 and not in water, because

A. SO3 gas is sparingly soluble in water.
B. water forms an acid mist, which is difficult to absorb.
C. the purity of acid is affected.
D. scale formation in the absorber is to be avoided.

Answer: Option B

Explanation:

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20. 

Bitterns is a/an

A. unsaturated fat.
B. starting material for the production of iodine.
C. by-product of chlor-alkali industry.
D. none of these.

Answer: Option D

Explanation:

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