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Fuels and Combustion

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

C₂H₆
H₂
CO
C₂H₂

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Fuels and Combustion
Fossil fuels mean

Liquid fuels
Those fuels which are found in the crust of earth
Premature fuels with low calorific value
Solid fuels

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Fuels and Combustion
Which of the following is not a by-product fuel?

Petrol
Refinery gas
Blast furnace gas
Pitch

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Fuels and Combustion
Which of the following accounts for maximum energy loss in a boiler?

Unburnt carbon in flue gases
Flue gases
Ash content in the fuel
Incomplete combustion

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Fuels and Combustion
Abrasion index of blast furnace coke should be around __________ percent.

20
35
55
80

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

Lignite
Anthracite
Peat
Sub-bituminous coal

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