Assertion :Nitrous acid $(H N O_{2})$ may act as an oxidising as well as reducing agent. Reason: The oxidation number of nitrogen remains same in all the compounds.

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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Assertion is incorrect but Reason is correct

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Solution

The correct option is C Assertion is correct but Reason is incorrect
In nitrous acid ( $H N O_{2}$ ), the nitrogen atom has oxidation state of $+ 3$ .
This is in between the highest oxidation state ( $+ 5$ ) and lowest oxidation state ( $- 3$ ). Thus, nitrous acid can either accept or lose electrons and get reduced or oxidized.
Hence, nitrous acid can act as oxidizing and reducing agent.

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Choose the correct option.

Assertion (A) Ethanol is a weaker acid than phenol.
Reason (R) Sodium ethoxide may be prepared by the reaction of ethanol with aqueous NaOH.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
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Assertion :Nitrous acid (HNO2) may act as an oxidising as well as reducing agent. Reason: The oxidation number of nitrogen remains same in all the compounds.

Assertion :Nitrous acid $(H N O_{2})$ may act as an oxidising as well as reducing agent. Reason: The oxidation number of nitrogen remains same in all the compounds.