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Fuels and Combustion

Fuels and Combustion
Flue gas obtained on complete combustion of pure acetylene (a hydrocarbon fuel) will contain

Both B & C
CO₂
CO
H₂O

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Fuels and Combustion
Which of the following accounts for maximum energy loss in a boiler?

Incomplete combustion
Ash content in the fuel
Flue gases
Unburnt carbon in flue gases

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Fuels and Combustion
The calorific value of natural gas is about __________ kcal/Nm³.

10, 000
25, 000
35, 000
2500

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Fuels and Combustion
In high temperature carbonisation of coal compared to low temperature carbonisation

Calorific value of the coke oven gas is lower
Aromatic content of tar is low
H₂ content in the coke oven gas is more
Yield of ammonia is less

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Fuels and Combustion
Coal tar fuel - 200 (CTF 200) is a mixture of

Anthracene and crecosote oil
Solar oil and pitch
Light oil and pitch
Pitch and creosote oil

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Fuels and Combustion
Very __________ coals are completely devoid of cokability i.e, it is non coking.

Both A & B
Neither A nor B
Mature
Young

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