The highest grade of coal whose surface shines and has the highest calorific value is ........

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The highest grade of coal whose surface shines and has the highest calorific value is:

Anthracite

Lignite

Hematite

None of these

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Explanation:

Anthracite: The highest grade of coal whose surface is shining and has the highest calorific value, is Anthracite. Anthracite, often referred to as hard coal, is a hard, compact variety of coal that has a submetallic luster. Hence option 1st is correct.