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Question

3N2H4+2BrO33N2+2Br+6H2O

The above reaction shows :

A
intermolecular redox
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B
auto-redox
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C
intramolecular redox
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D
either of these
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Solution

The correct option is A intermolecular redox
The balanced reaction is as follows:

3N2H4+2BrO33N2+2Br+6H2O
The oxidation number of N increases from -2 to 0. Thus, N2H4 is oxidized.
The oxidation number of Br decreases from +5 to -1. Thus, BrO3 is reduced.

Here, one compound oxidises while other reduces.Therefore, it is an intermolecular redox process.

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