1.

Which of the following is a redox decomposition reaction ?

Answer»

`CaCO_(3)(s)overset(Delta)toCaO(s)+CO_(2)(G)`
`2KClO_(3)(s)overset(Delta)to2KCl(s)+3O_(2)(g)`
`2H_(2)O(l)+2F_(2)(g)to4HF(aq)+O_(2)(g)`
`2Na(s)+Cl_(2)(g)to2NaCl(s)`

Answer :B


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