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Fuels and Combustion

Fuels and Combustion
Temperature of coke oven gas just before entering into saturator (for recovery of NH₃) is about __________ °C.

120
30
65
180

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Fuels and Combustion
Desirable "Micum Index" values of metal-lurical coke are

M40 > 4% and M10 < 80%
M40 > 78% and M10 < 10%
M40 > 10% and M10 < 78%
M40 > 98% and M10 < 2%

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Fuels and Combustion
Bomb calorimeter can be used to determine the __________ of the coal.

Neither A nor B
Both A & B
Calorific value
Sulphur content

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Fuels and Combustion
Yield of charcoal in high temperature carbonisation of wood is about __________ percent.

10
25
50
75

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

35, 000
10, 000
25, 000
2500

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Fuels and Combustion
With increase in the oxygen content of the coal, its __________ decreases.

Calorific value
Neither A nor B
Caking power
Both A & B

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