Statement-I: Oxidation state of nitrogen in $\mathrm{N}_2 \mathrm{H}_2$ is $-1.$ Statement-II: Nitogen has fractional oxidation state in $\mathrm{N}_3 \mathrm{H}.$

Both the statements are correct

Both the statements are incorrect

Statement-I is correct but statement-II is incorrect

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JEE CHEMISTRY MCQ: REDOX REACTIONS

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Analyzing +4 | -1

Statement-I: Oxidation state of nitrogen in

\mathrm{N}_2 \mathrm{H}_2

-1.

Statement-II: Nitogen has fractional oxidation state in

\mathrm{N}_3 \mathrm{H}.

View answer and explanation

Correct option: D

Statement-I is incorrect but statement-II is correct

Statement-I is incorrect, and Statement-II is correct; the oxidation state of nitrogen in N2H2 is -1, while in N3H, it's fractional (-1/3). Therefore, option D is the correct answer.

More Questions from REDOX REACTIONS

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The oxidation number of

\mathrm{H}

in sodium hydride is A reagent, which can decrease the oxidation number of an element, is called Consider the following decomposition reaction

2 \mathrm{KClO}_3 \longrightarrow 2 \mathrm{KCl}+3 \mathrm{O}_2

In the above reaction, Assertion (A):

\mathrm{HNO}_3

acts as oxidizing agent.

Reason (R): Oxidation no. of nitrogen is +5, no increase in oxidation no. beyond +5 can occur. The oxidation no. of

\mathrm{HNO}_3

can only decrease. Assertion :- Bromide ion is serving as a reducing agent in the reaction.

\mathrm{MnO}_4^{-}(\mathrm{aq})+\mathrm{Br}^{-}(\mathrm{aq})+\mathrm{H}_2 \mathrm{O} \longrightarrow 2 \mathrm{MnO}_2(\mathrm{aq})+\mathrm{BrO}_3^{-}(\mathrm{aq})+2 \mathrm{OH}^{-}(\mathrm{aq})

Reason :- Oxidation number of

\mathrm{Br}

increases from

-1

+5.

A substance, that by its sharp colour change indicates the completion of reaction is known as :