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Fuels and Combustion

Fuels and Combustion
When the coal is heated in absence of air, it is called its

Carbonisation
Coalification
Gasification
Deoxidation

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Fuels and Combustion
High sulphur (4-6%) coal in India are found in

Andhra Pradesh
Assam
Madhya Pradesh
Bengal

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Fuels and Combustion
To avoid fire by spontaneous combustion of coal due to its low temperature oxidation, it should be stored in

Large heaps with small surface to volume ratio
Shallow and small piles
Closed space without any ventilation facility
Fine sizes without the presence of any lump

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Fuels and Combustion
With increase in moisture content of coal, its

Calorific value increases sometimes
None of these
Clinkering tendency during combustion increases
Bulk density always decreases

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Fuels and Combustion
Cannel coal and boghead coal are the examples of

Humic coals
None of these
Sapropelic coals
Liptobiolites

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Fuels and Combustion
Calorific value of furnace oil is about __________ Kcal/kg.

15000
5000
20000
10000

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