Chemical Engineering - Chemical Process

31. 

Yellow glycerine is made into white, using

A. activated carbon
B. diatomaceous earth
C. bauxite
D. bentonite

Answer: Option A

Explanation:

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32. 

Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.

A. -5 to 0
B. 5 to 10
C. 30 to 50
D. 75 to 80

Answer: Option C

Explanation:

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33. 

Brackish water which contains mostly dissolved salt, can be purified by the __________ process.

A. reverse osmosis
B. sand filter
C. lime soda
D. permutit

Answer: Option A

Explanation:

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34. 

Major component of flint glass is

A. lead oxide
B. silica
C. alumina
D. soda

Answer: Option A

Explanation:

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35. 

Gypsum is chemically

A. calcium chloride
B. potassium sulphate
C. sodium sulphate
D. calcium sulphate

Answer: Option D

Explanation:

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