Explanation
Correct Answer: Option A
Explanation: Metals have free electrons present in them so they are good conductors of electricity.
Explanation:
Non metals on combustion forms acidic oxides.
Example: S+O2→SO2 where SO2 is an acidic oxide. C+O2→CO2 where CO2 is an acidic oxide.
Metals on combustion form basic oxides.
Example: 4 Na+O2→Na2O where Na2O is a basic oxide.
Correct Option : A
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