The two major components in cement are
A) clay and limestone.
B) sand and limestone.
C) calcium carbonate and limestone.
D) quartz and limestone.
Correct Answer:
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Q19: The basic unit of silicates is
A)SiO.
B)SiO₂.
C)SiO₃.
D)SiO₄.
Q20: Carbonates are composed of
A)carbon and oxygen.
B)carbon, oxygen
Q21: Which material is characterized by a well-ordered,three-dimensional
Q22: Which of the following is NOT a
Q23: Which of the following problems is NOT
Q25: Great quantities of _ have been used
Q26: Cigarette smoke and asbestos fibers act in
Q27: One of the major problems associated with
Q28: The color of quartz crystals is due
Q29: Clay consists mostly of
A)aluminum oxides.
B)aluminum hydroxides.
C)silicates.
D)carbonates.
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