JEE Main 2021ChemistryRedox ReactionsEasyMCQ

JEE Main 2021 — Redox Reactions Question with Solution

JEE Main 2021 (27 Jul Shift 1)

Question

The oxidation states of 'P' in H4P2O7, H4P2O5 and H4P2O6, respectively, are :

Choose an option

Show full solutionCorrect option: C
Correct answer
C5, 3 and 4

Step-by-step explanation

Oxidation state of P in H4P2O7, H4P2O5 and H4P2O6 is 5, 3 & 4 respectively 

H4P2O7
2x+4(+1)+7(-2)=0
x=+5
H4P2¯O5
2x+4(+1)+5(-2)=0
x=+3
H4P2¯O6
2x+4(+1)+6(-2)=0
x=+4

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About this question

This is a previous-year question from JEE Main 2021, 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.