JEE Main 2020 — Redox Reactions Question with Solution
From: JEE Main 2020 (Online) 7th January Evening Slot
Question
The redox reaction among the following is :
Choose an option
Show full solutionCorrect option: C
Correct answer
Ccombination of dinitrogen with dioxygen at 2000 K
Step-by-step explanation
N2 + O2 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 2O3 (Non - redox reaction)
2NaOH + H2SO4 Na2SO4 + 2H2O (neutralization reaction)
[Co(H2O)6]Cl3 + 3AgNO3 3AgCl + [Co(H2O)6](NO3)3
Reaction of [CO(H2O)6]Cl3 with AgNO3 is not redox reaction. It is a precipitation reaction.
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 2O3 (Non - redox reaction)
2NaOH + H2SO4 Na2SO4 + 2H2O (neutralization reaction)
[Co(H2O)6]Cl3 + 3AgNO3 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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This is a previous-year question from JEE Main 2020, covering the Redox Reactions chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.