Chemical Engineering - Chemical Process

26. 

Dehydrogenation of ethyl benzene produces

A. styrene
B. naphthalene
C. phenol
D. benzoic acid

Answer: Option A

Explanation:

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27. 

Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces

A. nylon-6
B. dacron
C. polyester
D. PVC

Answer: Option B

Explanation:

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28. 

Lindane is

A. not a fumigant.
B. BHC (Benzene Hexa Chloride) containing 99% γ-isomer.
C. a by-product of BHC manufacture.
D. both(b) and (c).

Answer: Option B

Explanation:

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29. 

Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium bicarbonate

A. is prone to thermal decomposition.
B. has high water solubility and is unstable.
C. is soluble in ammonium chloride and potassium chloride solution.
D. all (a), (b) and (c).

Answer: Option C

Explanation:

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30. 

Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?

A. Sodium silicate
B. Sodium borate
C. Sodium tripolyphosphate (STPP)
D. Caustic soda

Answer: Option B

Explanation:

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