Coke oven gas constitutes mainly of ____________________?

Question: The calorific value of a gas of composition CO2 = 20%, H2 = 50%, CH4 = 30%, is y. If the composition of gas is changed to H2 = 50%, CH4 = 30%, CO2 = 10%, N2 = 10%, then the calorifice value will be
[A].

y

[B].

0.95 y

[C].

1.05 y

[D].

1.8 y

Answer: Option A

Explanation:

No answer description available for this question.

Question: Junker’s calorimeter is used to determine the calorific value of
[A].

pulverised coal

[B].

gaseous fuels

[C].

fuel oil

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Combustion of pulverised fuel
[A].

requires larger combustion chamber than rich gaseous fuel.

[B].

in a metallurgical furnace does not contaminate the product in the furnace by ash from fuel.

[C].

suppresses the discharge of fine dust and grit into atmosphere

[D].

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

Answer: Option A

Explanation:

No answer description available for this question.

Question: Low temperature oxidation and spontaneous combustion of freshly mined coal is accentuated, if
[A].

it contains large amount of volatile matter.

[B].

it is stored in tall heaps.

[C].

smaller fines are stored in large quantity.

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.