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Fuels and Combustion

Fuels and Combustion
Combustion reaction of fuels is a/an __________ reaction.

Endothermic
Exothermic
None of these
Auto catalytic

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Fuels and Combustion
Undercharging of coal in the by-product coke ovens results in

Increase in its throughput
No change in the c.v. of coke oven gas
Increase in the c.v. of coke oven gas
Decrease in the c.v. of coke oven gas

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Fuels and Combustion
High sulphur (4-6%) coal in India are found in

Assam
Andhra Pradesh
Bengal
Madhya Pradesh

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Fuels and Combustion
Volumetric ratio of Nā‚‚ to Oā‚‚ in dry atmospheric air is

3.76
0.21
4.76
0.79

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Fuels and Combustion
Out of the following fuels, the difference between gross and net calorific value will be minimum in case of

Natural gas
Water gas
Blast furnace gas
Coke oven gas

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Fuels and Combustion
Soft coke is not

Produced by low temperature carbonisation of coal
Used in blast furnaces
A domestic fuel
None of these

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