Chemical Engineering - Chemical Process

31. 

Black liquor is converted into white liquor by

A. evaporation and burning the concentrate followed by causticisation of products.
B. multi-effect evaporation only.
C. selective liquid extraction.
D. extractive distillation.

Answer: Option A

Explanation:

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32. 

Varnish does not contain

A. thinner
B. pigment
C. both (a) & (b)
D. neither (a) nor (b)

Answer: Option B

Explanation:

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33. 

Alcohol is produced by the

A. oxidation of an aldehyde
B. hydrolysis of an ether
C. esterification of a fat
D. none of these

Answer: Option B

Explanation:

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34. 

Varnish does not contain

A. pigment
B. thinner
C. dryer
D. anti-skimming agent

Answer: Option A

Explanation:

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35. 

Polymerisation product of C2F4 (carbon tetraflouride) is called P.T.F.E (poly chloro tetra flouro ethylene). It is also called

A. polyurethane
B. silicone
C. teflon
D. epoxy resin

Answer: Option C

Explanation:

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