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Fuels and Combustion

Fuels and Combustion
Which of the following has the highest flame speed?

CH₄
H₂
C₂H₆
CO

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Fuels and Combustion
A sooty flame can be made non-luminous by

Admitting more gas
Admitting more air
Shutting air supply
Shutting gas supply

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Fuels and Combustion
Which of the following is unsuitable fuel for producer gas manufacture?

Coal having low fusion point of its ash
Anthracite
Coke
Coal having high fusion point of its ash

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Fuels and Combustion
With increase in C/H ratio of a fuel, the dew point of flue gases

Increases
May increase or decrease ; depends on the type of fuel
Decreases
Remains same

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Fuels and Combustion
Fuel for a fast breeder nuclear reactor is

Neptunium
Uranium
Radium
Plutonium

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Fuels and Combustion
Yield of charcoal in high temperature carbonisation of wood is about __________ percent.

75
25
50
10

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