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Fuels and Combustion

By-products recovery process from coal carbonisation is termed as direct, indirect and semi direct process depending upon the method of recovery of_______________?

Fuels and Combustion /
By-products recovery process from coal carbonisation is termed as direct, indirect and semi direct process depending upon the method of recovery of_______________?

A. Tar
B. Benzol
C. Ammonia
D. None of these

By-products recovery process from coal carbonisation is termed as direct, indirect and semi direct process depending upon the method of recovery of_______________? Read More »

Fuels and Combustion

As the C/H ratio of the fuel increases, the amount of CO2 formed on combustion _______________ for the same percentage of excess air?

Fuels and Combustion /
As the C/H ratio of the fuel increases, the amount of CO2 formed on combustion _______________ for the same percentage of excess air?

A. Decreases
B. Increases
C. Remain same
D. May increase or decrease depending on the type of fuel

As the C/H ratio of the fuel increases, the amount of CO2 formed on combustion _______________ for the same percentage of excess air? Read More »

Fuels and Combustion

With increase in the time of carbonisation at a particular temperature (say 1000°C), the ______________ percentage in coke oven gas increases?

Fuels and Combustion /
With increase in the time of carbonisation at a particular temperature (say 1000°C), the ______________ percentage in coke oven gas increases?

A. Hydrogen
B. Methane
C. Unsaturated hydrocarbons
D. All A., B. and C.

With increase in the time of carbonisation at a particular temperature (say 1000°C), the ______________ percentage in coke oven gas increases? Read More »

Fuels and Combustion