Chemical Engineering - Chemical Process

16. 

Sucrose content in the raw juice extracted from sugar cane is about __________ percent.

A. 1 - 2
B. 15 - 20
C. 50 - 60
D. 80 - 85

Answer: Option B

Explanation:

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17. 

Fusel oil is a/an

A. essential oil.
B. extract from medicinal herbs.
C. mixture of higher molecular weight alcohols (a by-product obtained during production of alcohol from molasses).
D. none of these.

Answer: Option C

Explanation:

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18. 

Styrene-butadiene-rubber (SBR) as compared to natural rubber has

A. Poorer tensile strength.
B. poorer resistance to oxidation.
C. greater amount of heat build-up under heavy loading.
D. all (a), (b) and (c).

Answer: Option D

Explanation:

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19. 

Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.

A. CaO
B. MnO2
C. ZnO
D. FeS

Answer: Option C

Explanation:

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20. 

The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is

A. dilute H2SO4
B. oleum
C. ultraviolet light
D. none of these

Answer: Option B

Explanation:

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