Chemical Engineering - Chemical Process

41. 

Fish contains about __________ percent oil.

A. 5
B. 10
C. 20
D. 35

Answer: Option C

Explanation:

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42. 

The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to

A. avoid mechanical weakening of fibre.
B. remove lignin by way of crystallisation.
C. increase the cellulose content.
D. none of these.

Answer: Option A

Explanation:

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43. 

Polymethyl methacrylate (PMMA) is known as

A. bakelite
B. teflon
C. perspex
D. nylon-6

Answer: Option C

Explanation:

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44. 

Coloured glass is obtained by mixing of colored salts. Addition of __________ oxide is done to impart greenish blue color to the glass.

A. chromium
B. arsenic
C. copper
D. mangnese

Answer: Option C

Explanation:

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45. 

Percentage of alcohol in beer may be around __________ percent.

A. 2-8
B. 18-23
C. 27-32
D. 1-4

Answer: Option A

Explanation:

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