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Electrochemistry question

2024 · Shift 2 · Q5

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PYQ Library
JEE Advanced
Chemistry
Electrochemistry
2024 · Shift 2 · Q5

Electrochemistry question

2024 · Shift 2 · Q5

JEE AdvancedChemistryElectrochemistryMultiple correct+4 / −2

An aqueous solution of hydrazine

\left(\mathrm{N}_2 \mathrm{H}_4\right)

is electrochemically oxidized by

\mathrm{O}_2

, thereby releasing chemical energy in the form of electrical energy. One of the products generated from the electrochemical reaction is

\mathrm{N}_2(\mathrm{~g})

. Choose the correct statement(s) about the above process

A
$\mathrm{OH}^{-}$ ions react with $\mathrm{N}_2 \mathrm{H}_4$ at the anode to form $\mathrm{N}_2(\mathrm{~g})$ and water, releasing 4 electrons to the anode.
B
At the cathode, $\mathrm{N}_2 \mathrm{H}_4$ breaks to $\mathrm{N}_2(\mathrm{~g})$ and nascent hydrogen released at the electrode reacts with oxygen to form water.
C
At the cathode, molecular oxygen gets converted to $\mathrm{OH}^{-}$ .
D
Oxides of nitrogen are major by-products of the electrochemical process.

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