Fuels and Combustion

Question: A good metallurgical coke
[A].

should have high porosity.

[B].

should be brittle.

[C].

must contain moderate quantities of ash, moisture, sulphur and volatile matters.

[D].

should have low fusion point of its ash.

Answer: Option A

Explanation:

No answer description available for this question.

Question: In Lurgi coal gasifier,
[A].

coking coals cannot be used.

[B].

low carbon conversion efficiency is achieved.

[C].

entrainment of solids is higher.

[D].

larger quantity of coal can be processed.

Answer: Option D

Explanation:

No answer description available for this question.

Question: In flue gas analysis by Orsat’s apparatus, carbon dioxide is absorbed by
[A].

potassium hydroxide.

[B].

dilute potassium carbonate.

[C].

cuporus chloride.

[D].

alkaline pyragllol solution.

Answer: Option A

Explanation:

No answer description available for this question.

Question: In flue gas analysis by Orsat’s apparatus, oxygen is absorbed by
[A].

potassium hydroxide.

[B].

cuprous chloride.

[C].

alkaline pyragllol solution.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Catalyst used in Fischer-Tropsch process is
[A].

nickel

[B].

zinc oxide

[C].

alumina

[D].

thorium oxide

Answer: Option A

Explanation:

No answer description available for this question.

Question: ‘Fuel’ can be defined as a substance which produces heat by
[A].

combustion.

[B].

nuclear fission.

[C].

nuclear fusion.

[D].

all (a), (b) & (c).

Answer: Option D

Explanation:

No answer description available for this question.

Question: Coke oven gas compared to blast furnace gas is
[A].

more explosive and inflammable.

[B].

less poisonous.

[C].

lighter.

[D].

all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

Question: Percentage of methane in coke oven gas may be around
[A].

5

[B].

15

[C].

25

[D].

50

Answer: Option C

Explanation:

No answer description available for this question.

Question: Percentage of hydrogen in coke oven gas may be around
[A].

10

[B].

25

[C].

45

[D].

60

Answer: Option D

Explanation:

No answer description available for this question.

Question: Percentage of carbon monoxide in blast furnace gas may be around
[A].

8

[B].

14

[C].

22

[D].

52

Answer: Option C

Explanation:

No answer description available for this question.