1.

Which one of the following is a reduction reaction

Answer»

`2Mg(s)+O_(2)rarr2Mg(s)`
`S(s)+O_(2)(g)rarrSO_(2)(g)`
`2HgO(s) rarr 2HG(l)+O_(2)(g)`
`Mg(s)+S(s)rarrMgS(s)`

Solution :Mercuricc oxides GOT reduced to MERCURY and its oxidation NUMBER changes form +2 to 0 whereas in other reaction are showin oxidation reaction


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