The United States is estimated to have approximately what percentage of the world's coal reserves?
A) 10%
B) 25%
C) 40%
D) 80%
Correct Answer:
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Q41: Which of the following is NOT a
Q42: Given the following analysis of coal samples,which
Q43: The most abundant fossil fuel in the
Q44: Most of the coal that exists today
Q45: Coal can be cleaned before it is
Q47: The primary element in coal is
A)carbon.
B)silicon.
C)oxygen.
D)chlorine.
Q48: The highest grade of coal is
A)anthracite.
B)bituminous.
C)lignite.
D)peat.
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
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