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Fuels and Combustion

Fuels and Combustion
Kopper-Totzek coal gasifier (installed in a coal based nitrogeneous fertiliser plant) employs a/an __________ bed gasifier.

Fluidised
Fixed
Entrained
Moving

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Fuels and Combustion
Which of the following is not a by-product recovered in a high temperature coal carbonisation plant?

Pitch-cresosote mixture (PCM)
Ethylene
Napthalene
Benzol

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Fuels and Combustion
With increase in the oxygen content of the coal, its __________ decreases.

Calorific value
Neither A nor B
Both A & B
Caking power

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Fuels and Combustion
Coalification means the

Process of conversion of lignite into anthracite
Underground gasification of coal
Direct hydrogenation of coal
Complete combustion of coal

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Fuels and Combustion
Naphthalene is used for making

Insecticides (e.g. moth balls)
Unsaturated polyesters
Drug intermediates e.g. β-naphthol
All of these

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Fuels and Combustion
Coal tar (produced by high temperature carbonisation) is the main source of

Aromatic compounds
Alphatic compounds
Olefins
Paraffins

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