Chemical Engineering - Chemical Process

46. 

Which is the main reducing agent during production of iron from iron ore in a blast furnace ?

A. C
B. CO
C. CO2
D. H2

Answer: Option B

Explanation:

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47. 

The drug used in contraceptives is

A. sulphadizene
B. mestranol
C. methyl salicylate
D. pencillin

Answer: Option B

Explanation:

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48. 

Raw materials used for producing __________ cement does not contain iron oxide.

A. waterproof
B. slag
C. white
D. pozzolan

Answer: Option C

Explanation:

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49. 

In the Lurgi coal gasifier

A. coking coals cannot be used.
B. low carbon conversion efficiency is achieved.
C. entrainment of solids is higher.
D. large quantity of coal can be processed.

Answer: Option D

Explanation:

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50. 

Neon gas is

A. flammable in nature.
B. used in color discharge tube.
C. filled in lamps having tungsten filament.
D. all (a), (b) and (c).

Answer: Option B

Explanation:

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