A) by heating carbon in electric furnace
B) by heating potassium fluosilicate with potassium
C) silica with magnesium
D) none of these
Correct Answer: C
Solution :
We know that\[Si{{O}_{2}}+2Mg\xrightarrow{\Delta }Si+2MgO\]. Thus in this reaction silicon can be prepared by heating dry powdered silica with magnesium in laboratory.
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