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Balbeer M.
's Polls
GK
Quartz used in quartz clocks etc is chemically
Silicon Dioxide
0 votes (0%)
Silicon Dioxide
Germanium Oxide
0 votes (0%)
Germanium Oxide
A mixture of germanium oxide and silicon dioxide
0 votes (0%)
A mixture of germanium oxide and silicon dioxide
Sodium Silicate
0 votes (0%)
Sodium Silicate
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Wolmal
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