A major inconvenience of coal as a fuel is that it is a(n)
A) solid.
B) liquid.
C) gas.
D) mixture of all three states.
Correct Answer:
Verified
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
Q53: When coal is heated in the absence
Q54: When coal is heated in the absence
Q55: When coal containing sulfur is burned,the sulfur
Q56: Which of the following did NOT contribute
Q57: When coal burns,
A)chemical energy is converted to
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