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Fuels and Combustion

Fuels and Combustion
Hard pitch is used for making

Plastics
Pulverised fuel
Perfumes
Insecticides

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Fuels and Combustion
Coke compared to the coal from which it has been made, contains

Less volatile matter
More carbon
Greater percentage of ash
All of these

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Fuels and Combustion
Calorific value of pitch creosote mixture (PCM) i.e., C.T.F.-200 is about

8800 kcal/kg
8800 kcal/m³
25000 kcal/kg
Same as that of coal middling

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Fuels and Combustion
Which of the following is unsuitable fuel for producer gas manufacture?

Coke
Anthracite
Coal having high fusion point of its ash
Coal having low fusion point of its ash

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Fuels and Combustion
Ammonia content in raw coke oven gas is about __________ gm/Nm³.

1
100
15
50

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Fuels and Combustion
Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than __________ °C is liable to form clinker.

1250
1100
1350
1400

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