With increase in the oxygen content of the coal, its ______________ decreases?

Question: Octane number of 2, 2, 4 – trimethyl pen-tane is
[A].

0

[B].

100

[C].

in between 0 and 100

[D].

more than 100

Answer: Option B

Explanation:

No answer description available for this question.

Question: With increases in carbonisation temperature
[A].

coke even gas yield increases.

[B].

tar yield increases.

[C].

hydrogen percentage in the coke oven gas decreases.

[D].

methane percentage in the coke oven gas increases.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Naphthalene recovered from coke oven gas is used
[A].

as moisture proof coating on fibres.

[B].

as moth balls (insecticides).

[C].

as a fuel in furnaces.

[D].

for making electrodes.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Compound coke ovens are those which can be heated by
[A].

both steam and electrical power.

[B].

lean gas (e.g., B.F. gas).

[C].

rich gas (e.g., coke oven gas).

[D].

both (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.