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Fuels and Combustion

Fuels and Combustion
Micum Index of a coke is a measure of its

Reactivity
Hardness & strength
Porosity
Bulk density

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

10, 000
15, 000
5000
25, 000

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Fuels and Combustion
The maximum adiabatic flame temperature in air as compared to that in pure oxygen is

Much lower
Either lower or higher, depends on the type of fuel
Much higher
Same

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Fuels and Combustion
Naphthalene is removed from coke oven gas by

Scrubbing with wash oil (a petroleum product)
Adsorbing on bog iron bed
Absorbing in vetro-coke solution
None of these

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Fuels and Combustion
Which of the following is a rich fuel gas?

None of these
Refinery gases
Producer gas
Coal gas from underground gasification of coal

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Fuels and Combustion
C/H ratio is the maximum in case of

Furnace oil
Coal
Naphtha
Natural gas

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