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Fuels and Combustion

Fuels and Combustion
Which of the following has the highest calorific value?

Peat
Lignite
Anthracite
Sub-bituminous coal

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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

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

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Fuels and Combustion
Largest constituent of coke oven gas is

N₂
CH₄
CO₂
H₂

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Fuels and Combustion
Caking index of a coal is a measure of its

Reactivity
Abradability
Agglutinating (binding) properties
Porosity

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Fuels and Combustion
Blast furnace gas is a very poisonous gas because of its predominantly high __________ content.

CO
CH₄
H₂O
CO₂

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Fuels and Combustion
Which of the following gaseous fuels has the highest net calorific value (kcal/Nm³)?

Natural gas
Carburetted water gas
Producer gas
Liquified petroleum gas

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