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Fuels and Combustion

Fuels and Combustion
Fuel for a fast breeder nuclear reactor is

Radium
Uranium
Plutonium
Neptunium

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Fuels and Combustion
Incomplete combustion of a fuel is characterised by the high __________ in the flue gas.

Carbon monoxide
Temperature
Smoke
Oxygen

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Fuels and Combustion
A coal having higher volatile matter content will necessarily have lower

Calorific value
Ignition temperature
Caking index
Ash fusion temperature

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Fuels and Combustion
During the carbonisation of coal

All of these
All tar is evolved at < 600°C
Hard semi-coke starts shrinking at 600°C
Evolution of H₂ and formation of methane and aromatics occur at > 700°C

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Fuels and Combustion
Use of preheated air for combustion of fuel in the furnace, increases the

None of these
Scale losses of the furnace stock
Calorific value of the fuel
Flame temperature

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Fuels and Combustion
Efficiency of the combustion of a fuel is judged by the __________ the flue gas.

Temperature of
Colour of
% of O₂in
%of CO₂ in

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