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Fuels and Combustion

Fuels and Combustion
Which of the following is not a micro component present in coal?

Clarain
Liptinite
Micrinite
Fusinite

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Fuels and Combustion
Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction?

C + H₂O ⟷ CO + H₂
CO + H₂O ⟷ CO₂ + H₂
2CO ⟷ C + CO₂
C + 2H₂O ⟷ CO₂ + 2H₂

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Fuels and Combustion
Coal tar (produced by high temperature carbonisation) is the main source of

Alphatic compounds
Aromatic compounds
Olefins
Paraffins

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Fuels and Combustion
The calorific value of 'LPG' (50% propane + 50% butane) is about __________ kcal/Nm³.

25, 000
5000
10, 000
15, 000

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Fuels and Combustion
Coking time in a commercial high temperature coal carbonisation plant is about __________ hours.

28
18
36
6

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Fuels and Combustion
Gross calorific value will be equal to the net calorific value for

C₂H₂
CO
C₂H₆
H₂

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