Light oil whose major component is Benzol, is obtained by the distillation of crude tar in the temperature range of _____________ °C?

Question: Yield of coke oven gas in low temperature carbonisation of coal is about __________ Nm3 /ton of dry coal.
[A].

60

[B].

160

[C].

500

[D].

750

Answer: Option B

Explanation:

No answer description available for this question.

Question: Bomb calorimeter can be used to determine the __________ of the coal.
[A].

sulphur content

[B].

calorific value

[C].

both(a) & (b)

[D].

neither (a) nor (b)

Answer: Option C

Explanation:

No answer description available for this question.

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: Mineral matter content (M) and ash content (A) in coal are approximately related as
[A].

M = 1.1A

[B].

M = A

[C].

M = 1.5A

[D].

M = 2A

Answer: Option A

Explanation:

No answer description available for this question.

Question: As the equilibrium moisture content of the coal increases, its
[A].

calorific value increases.

[B].

swelling number decreases.

[C].

swelling number increases.

[D].

bulk density decreases.

Answer: Option B

Explanation:

No answer description available for this question.

Question: The calorific value of producer gas is around __________ kcal/Nm3
[A].

1300

[B].

500

[C].

4500

[D].

9000

Answer: Option A

Explanation:

No answer description available for this question.