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Fuels and Combustion

Fuels and Combustion
Optimum preheating temperature for pitch creosote mixture (PCM) which is also termed as C.T.F-200, before atomisation through burners is

200 °R
200 °F
200 °K
200 °C

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Fuels and Combustion
A fuel containing carbon and carbon monoxide (but containing no hydrogen or its compounds) is burnt in pure oxygen at constant pressure. Its gross calorific value as compared to net calorific value will be

Same
More
Data insufficient; can't be predicted
Less

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Fuels and Combustion
Volatile matter content of metallurgical coke may be around __________ percent.

30-33
22-26
10-15
1-2

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Fuels and Combustion
Improper storage condition results in the weathering of coal and spontaneous combustion, which increases its

Calorific value
Caking index
Friability & oxygen content
Yield of carbonised products

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Fuels and Combustion
Preheating of a gaseous fuel results in increased

Quantity of flue gas
Flame length
Flame temperature
Ignition temperature

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

75
25
10
50

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