JEE Main 2016Chemistryp Block Elements (Group 15, 16, 17 & 18)MediumMCQ

JEE Main 2016 — p Block Elements (Group 15, 16, 17 & 18) Question with Solution

JEE Main 2016 (03 Apr)

Question

The pair in which phosphorous atoms have a formal oxidation state of + 3 is:

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Show full solutionCorrect option: C
Correct answer
COrthophosphorous and pyrophosphorous acids

Step-by-step explanation

Acid Formula Formal oxidation state of phosphorous
Pyrophosphorous acid H4P2O5 +3
Pyrophosphoric acid H4P2O7 +5
Orthophosphorous H3PO3 +3
Hypophosphoric acid H4P2O6 +4


Both pyrophosphorous and orthophosphorous acid have +3 formal oxidation state

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About this question

This is a previous-year question from JEE Main 2016, covering the p Block Elements (Group 15, 16, 17 & 18) 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.