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Fuels and Combustion

Fuels and Combustion
Gobar gas is produced by the __________ of 'gobar' (cow dung).

Hydrolysis
Oxidation
Fermentation
Dehydration

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Fuels and Combustion
Insitu theory and drift theory are related to the

Variation of coal quality with depth
Origin of coal
Coalification
Origin of petroleum oil

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Fuels and Combustion
In Lurgi coal gasifier,

Low carbon conversion efficiency is achieved
Larger quantity of coal can be processed
Entrainment of solids is higher
Coking coals cannot be used

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Fuels and Combustion
Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the

Incomplete combustion of coal
Risk of explosion
Requirement of large volume combustion chamber
Chances of clinker formation

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Fuels and Combustion
Power alcohol as compared to straight run gasoline has lower

Specific gravity
Viscosity
Calorific value
Octane number

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Fuels and Combustion
The pyragallol solution used in orsat apparatus can absorb

Both O₂ and CO
Only O₂
Both O₂ and CO₂
All of these

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