What is/are the parameter(s) for classifying coals?

Weight of coal

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Moisture content of coal

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Carbon content

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Colour of coal

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Solution

The correct options are
B
Moisture content of coal

C
Carbon content

The quality of coal can be improved by increasing the amount of fixed carbon and by decreasing the amount of moisture and other volatile materials in the coal.
On the other hand, the coal grade is independent of weight and colour of the coal.

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Similar questions

Arun was wondering how coals are categorised into energy quality grades. What is the parameter for classifying coals? Do you know?

α

β

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