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Question

The violent reaction between sodium and water is an example of :

A
reduction
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B
oxidation
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C
redox reaction
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D
neutralisation reaction
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Solution

The correct option is C redox reaction
Reaction:
Na+H2ONaOH+(1/2)H2
0 +1 +1 0
The oxidation state of Na changes from 0 to +1 while that of H from +1 to 0.
Here, oxidation state of reactants changes so, it is a redox reaction.

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