The highest grade of coal is
A) anthracite.
B) bituminous.
C) lignite.
D) peat.
Correct Answer:
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Q43: The most abundant fossil fuel in the
Q44: Most of the coal that exists today
Q45: Coal can be cleaned before it is
Q46: The United States is estimated to have
Q47: The primary element in coal is
A)carbon.
B)silicon.
C)oxygen.
D)chlorine.
Q49: A substance that burns readily and releases
Q50: The structural material of plants is largely
A)amylopectin.
B)coal.
C)amylose.
D)cellulose.
Q51: When coal is burned,mineral impurities are converted
Q52: A major inconvenience of coal as a
Q53: When coal is heated in the absence
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