Chemical Engineering - Chemical Process

16. 

Fermentation of molasses to produce ethyl alcohol is done at __________ °C

A. 20 - 30
B. < - 5
C. 100 - 150
D. 250 - 300

Answer: Option A

Explanation:

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17. 

The catalyst used in the manufacture of DDT is

A. alumina.
B. silica.
C. 20% oleum.
D. aluminium chloride.

Answer: Option C

Explanation:

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18. 

Most widely and commonly used coagulant for the removal of suspended impurities in water is

A. bleaching powder
B. slaked lime
C. alum
D. copper sulphate

Answer: Option C

Explanation:

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19. 

__________ is used as a catalyst in fat splitting.

A. ZnO
B. Ni
C. V2O5
D. FeO

Answer: Option A

Explanation:

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20. 

Which of the following is not produced on commercial scale from sea water?

A. Bromine.
B. Magnesium compounds.
C. Potassium compounds.
D. Sodium sulphate.

Answer: Option D

Explanation:

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