JEE Main 2022 · ChemistryMultiple choiceSingle correctMediumRecall

JEE Main 29 June 2022, Shift 1, Chemistry Q71

Question 71 of 90 in this shift, Chemistry question 11 of 30, Section A.

The oxoacid of phosphorus that is easily obtained from a reaction of alkali and white phosphorus and has two P-H bonds, is :

(1)Phosphonic acid
(2)Phosphinic acidOfficial answer
(3)Pyrophosphorus acid
(4)Hypophosphoric acid

Official answer

Option 2

NTA final key (2022 Session 1).

Chapter: The p-Block Elements
Topic: Group 15 & 16
Idea tested: Phosphorus Oxoacids

Same idea in other shifts

Asked 3× in all

8 Apr 2023, Shift 2 · Q88The ratio of sigma and $\pi$ bonds present in pyrophosphoric acid is ____________.MediumNumerical value
16 Mar 2021, Shift 2 · Q37The exact volumes of 1 M NaOH solution required to neutralise 50 mL of 1 M $\mathrm{H_3PO_3}$ solution and 100 mL of 2 M…MediumSingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.