Assertion : $H N O_{2}$ can act both as a reducing agent and an oxidising agent. Reason: In $H N O_{2}$ , oxidation state of nitrogen is +3 which can change from -3 to +5.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The oxidation state of $N$ in $H N O_{2}$ is +3
Possible oxidation states of N are from -3 to +5
$H N O_{2}$ can get reduced $N H_{3}$ with -3 oxidation state and oxidised to $H N O_{3}$ , with +5 oxidation state. Thus can act as both oxidising and reducing agent.
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Assertion :HNO2 can act both as a reducing agent and an oxidising agent. Reason: In HNO2, oxidation state of nitrogen is +3 which can change from -3 to +5.

Assertion : $H N O_{2}$ can act both as a reducing agent and an oxidising agent. Reason: In $H N O_{2}$ , oxidation state of nitrogen is +3 which can change from -3 to +5.