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FUELS AND COMBUSTION

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

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

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Fuels and Combustion
Gray King Assay and Swelling Index of a coal is a measure of its

Agglutinating properties
Resistance to impact breakage
Abradability
Swelling characteristics

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

Abradability
Agglutinating (binding) properties
Porosity
Reactivity

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Fuels and Combustion
Micum Index of a coke is a measure of its

Porosity
Reactivity
Bulk density
Hardness & strength

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Fuels and Combustion
Weathering of coal during storage causes

All of these
Decrease in its caking capacity
Increase in its friability
Reduction in coal size

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