Write any two properties of Coal
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1.1 Mechanical Strength. The mechanical strength of coal refers to its capacity to resist external forces and is related to physical properties of coal such as shatter indices and grind ability index. ...
1.2 Density. ...
1.3 Hardness. ...
1.4 Elasticity.
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THE THREE PROPERTIES OF COAL:-
i) coal is usually black in colour.
ii) coal is mainly form of carbon.
ii) coal is found in Madhya Pradesh, Bihar,odisha.
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