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Fuels and Combustion

Fuels and Combustion
Fuel combustion is never cent per cent efficient due to

Moisture loss
Dry gas/stack gas loss
Incomplete combustion
All of these

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Fuels and Combustion
Hard pitch is used for making

Plastics
Insecticides
Perfumes
Pulverised fuel

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

Petrol
Blast furnace gas
Refinery gas
Pitch

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Fuels and Combustion
Wood charcoal is obtained by the destructive distillation of wood. It is used in the production of activated carbon, which is not used for the

Absorption of gases and vapor
Decolourisation of sugar
Electrode manufacture
Solvent recovery from air and gases

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Fuels and Combustion
Stack (chimney) height in a big thermal power plant is dictated by the

Pollution control aspect
None of these
Limitation of constructional facilities
Draught to be created

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Fuels and Combustion
Use of excess of combustion air in the combustion of fuels results in

None of these
Long flame
Condensation of water vapour from the fuel gas
Heat losses

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