Verified Solution • 2025–26 Session moderate

QJEEM20Ch9250: JEE Main 2020 Chemistry - Class 11 JEEM20Ch9250 Solution: The redox reaction among the following is :

The redox reaction among the following is :

Multiple Choice Options

A reaction of H2SO4 with NaOH.
B formation of ozone form atmosphere oxygen in the presence of sunlight.
C combination of dinitrogen with dioxygen at 2000 K
D reaction of [Co(H2O)6]Cl3 With AgNO3

Step-by-Step Verified Solution

N₂ + O₂

\to

2NO

during the reaction, oxidation of nitrogen take place from 0 to 2 and reduction of oxygen take place from 0 to –2. It means this reaction is redox reaction.

3O₂

\to

2O₃ (Non - redox reaction)

2NaOH + H₂SO₄

\to

Na₂SO₄ + 2H₂O (neutralization reaction)

[Co(H₂O)₆]Cl₃ + 3AgNO₃

\to

3AgCl

↓

+ [Co(H₂O)₆](NO₃)₃

Reaction of [CO(H₂O)₆]Cl₃ with AgNO₃ is not redox reaction. It is a precipitation reaction.

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