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Fuels and Combustion

Fuels and Combustion
Bulk density of pulverised coal may be about __________ kg/m³.

1000
100
500
1500

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Fuels and Combustion
Main component of sewage gas produced during aneorobic decomposition of organic waste (by suitable bacteria) during sewage disposal is

CO₂
H₂
N₂
CH₄

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Fuels and Combustion
Coking time in narrow by-product coke ovens is around __________ hours.

80
8
48
18

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Fuels and Combustion
Adiabatic flame temperature of a fuel is dependent on the initial temperature of

Both A & B
Fuel
Air
Neither A nor B

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Fuels and Combustion
Washing of coal decreases its

Caking index
Mineral matter content
Both B and C
Ash content

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Fuels and Combustion
The most matured coal out of the following is

Bituminous
Lignite
Semi-anthracite
Sub-bituminous

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