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Fuels and Combustion

Fuels and Combustion
Stoichiometric combustion of 12 kg of carbon requires __________ of oxygen.

All of these
32 kg
22.4 Nm³
1kg mole

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Fuels and Combustion
Number of macrocomponents present in coal according to Stopes are

Four
Two
Six
Five

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Fuels and Combustion
Percentage of nitrogen in blast furnace gas may be around

5
25
55
80

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Fuels and Combustion
'Wobbe index' is a characteristic of

Liquid fuels
Fat coals
Gaseous fuels
Solid fuels

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Fuels and Combustion
Hard pitch is used for making

Perfumes
Pulverised fuel
Insecticides
Plastics

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Fuels and Combustion
Higher efficiency in the combustion of solid fuel can not be achieved by

Supplying correct quantity of combustion air
Adopting efficient-fuel firing technique & equipment
Proper fuel preparation
Keeping the flue gas exhaust temperature very high

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