Chemical Engineering - Chemical Process

1. 

DDT stands for

A. diethyl-diphenyl-trichloromethane.
B. dichloro-diphenyl-trichloromethane.
C. diphenyl-dichloro-trichloromethane.
D. dichloro-diphenyl-trichloroethane.

Answer: Option D

Explanation:

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2. 

Phosphoric acid is prepared from

A. cryolite
B. chalcopyrite
C. rock phosphate
D. none of these

Answer: Option C

Explanation:

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3. 

Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used

A. as a lubricant.
B. as a rust preventive.
C. in hard water for cleaning of cloth.
D. as a foam depressant in distillation column.

Answer: Option A

Explanation:

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4. 

Which of the following processes does not produce Cl2 as a co-product during the manufacture of caustic soda ?

A. Diaphragm electrolytic cell process
B. Mercury electrolytic cell process
C. Lime-soda process
D. None of these

Answer: Option C

Explanation:

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5. 

Bleaching action of bleaching powder is due to its __________ properties.

A. reducing
B. oxidising
C. disinfecting
D. none of these

Answer: Option B

Explanation:

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