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Fuels and Combustion

Fuels and Combustion
Oxygen required for theoretically complete combustion of 1 Nm³ methane is __________ Nm³.

1
6
4
2

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Fuels and Combustion
Pitch creosote mixture (PCM) as compared to furnace oil is a better fuel, because its

All of these
Emissivity factor is higher
Flue gas has lower dew point thereby facilitating more waste heat recovery
Sulphur content is lower

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Fuels and Combustion
Air/gas ratio for complete combustion will be the highest for

Carburetted water gas
Gobar gas
LPG
Coke oven gas

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Fuels and Combustion
Stack (chimney) height in a big thermal power plant is dictated by the

Pollution control aspect
None of these
Draught to be created
Limitation of constructional facilities

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Fuels and Combustion
Which of the following is coking?

Vitrain
Both A & B
Neither A nor B
Fussain

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Fuels and Combustion
Heat penetration rate in narrow coke ovens in high temperature carbonisation of coal is around __________ cm/hr.

20
2.5
0.5
10

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