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Fuels and Combustion

Fuels and Combustion
Calorific value of coke even gas produced by low temperature carbonisation of coal is about __________ Kcal/Nm³.

6500
10000
2500
4000

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Fuels and Combustion
Advantages of fluidised bed combustion are

Lower furnace operating temperature
Reduced NOx formation in flue gas
All of these
High heat transfer rate

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Fuels and Combustion
If the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be

High
None of these
Very high, if the fuel is of low calorific value
Low

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Fuels and Combustion
Which of the following has the highest calorific value?

Anthracite
Lignite
Peat
Sub-bituminous coal

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Fuels and Combustion
During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the

Complete combustion
None of these
High oxygen in flue gas
Incomplete combustion

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Fuels and Combustion
__________ is used as jet engine fuel.

Diesel
Petrol
LPG
Kerosene

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