Quartz crystals normally used in quartz clocks etc. is chemically-...??
A.silicon dioxide
B.germanium oxide
C.a mixture of germanium oxide and silicon dioxide
D.sodium silicate
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Quartz crystals normally used in quartz clocks etc. is chemically-...??
A.silicon dioxide
B.germanium oxide
C.a mixture of germanium oxide and silicon dioxide
D.sodium silicate
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Quartz crystals normally used in quartz clocks are silicon dioxide.
Option: A
Explanation:
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