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FUELS AND COMBUSTION

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

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

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

Abradability
Resistance to impact breakage
Swelling characteristics
Agglutinating properties

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

Reactivity
Agglutinating (binding) properties
Abradability
Porosity

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

Reactivity
Hardness & strength
Porosity
Bulk density

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Fuels and Combustion
Weathering of coal during storage causes

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

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