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Question: Calorific value of gobar gas (containing CH4 = 60% , H2 = 10% ; CO2 = 30%) may be about __________ Kcal/Nm3.
[A].

1800

[B].

3200

[C].

5400

[D].

10200

Answer: Option C

Explanation:

No answer description available for this question.

Question: ‘Wobbe index’ is a characteristic of
[A].

solid fuels

[B].

gaseous fuels

[C].

liquid fuels

[D].

fat coals

Answer: Option B

Explanation:

No answer description available for this question.

Question: Gobar gas is produced by the __________ of ‘gobar’ (cow dung).
[A].

hydrolysis

[B].

fermentation

[C].

oxidation

[D].

dehydration

Answer: Option B

Explanation:

No answer description available for this question.

Question: __________ has the widest inflammability limit (explosion limit) of all the gases.
[A].

Hydrogen

[B].

Carbon monoxide

[C].

Acetylene

[D].

Methane

Answer: Option C

Explanation:

No answer description available for this question.

Question: Combustion reaction of fuels is a/an __________ reaction.
[A].

auto catalytic

[B].

exothermic

[C].

endothermic

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: In low temperature carbonisation of coal, the
[A].

yield of coke oven gas is 290 Nm3 /ton dry coal.

[B].

volatile matter in coke is zero.

[C].

temperature maintained is 700°C.

[D].

yield of tar is about 3% of dry coal.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Bulk density of pulverised coal may be about __________ kg/m3.
[A].

100

[B].

500

[C].

1000

[D].

1500

Answer: Option B

Explanation:

No answer description available for this question.