Complete the sentence from the optionsQuartz crystals normally used in quartz clocks etc. is chemically _____ .

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Question:Complete the sentence from the optionsQuartz crystals normally used in quartz clocks etc. is chemically _____ .

1.Sodium Silicate

2.Silicon Dioxide

3.Germanium Oxide

4.A mixture of Germanium Oxide and Silicon dioxide

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  1. Complete the sentence from the optionsQuartz crystals normally used in quartz clocks etc. is chemically _____ .
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