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Which compound acts as an oxidising as w...

Which compound acts as an oxidising as well as reducing agent?

A

`SO_(2)`

B

`MnO_(2)`

C

`Al_(2)O_(3)`

D

`CrO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
The minimum and maximum oxidation number of S are –2 and +6 respectively. Since the oxidation number of S in `SO_2` is +4, therefore it can be either increased or decreased. Therefore `SO_2` behaves both as an oxidising as well as reducing agent.
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