When coal is heated in the absence of air,the solid left behind is called
A) coal.
B) coke.
C) coal tar.
D) carbon.
Correct Answer:
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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
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
Q58: The major component of natural gas is
A)ethane.
B)methane.
C)butane.
D)octane.
Q59: The lowest grade of coal is
A)anthracite.
B)bituminous.
C)lignite.
D)peat.
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