Of the given options, silica reacts only with .

H_{2}

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C l_{2}

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N a O H

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Solution

The correct option is C $N a O H$
Due to high $S i - O$ bond energy, silica is almost unreactive. It does not react with halogens or dihydrogen or even $H C l$ . It reacts with only $H F$ and $N a O H$ .

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Of the given options, silica reacts only with .

The correct option is C NaOHDue to high Si−O bond energy, silica is almost unreactive. It does not react with halogens or dihydrogen or even HCl. It reacts with only HF and NaOH.

The correct option is C $N a O H$
Due to high $S i - O$ bond energy, silica is almost unreactive. It does not react with halogens or dihydrogen or even $H C l$ . It reacts with only $H F$ and $N a O H$ .