Q42.Consider the following reaction : A + alkali →B (Major Product) JEE Main 2022 (26 Jun Shift 1) JEE Main Previous Year Paper If B is an oxoacid of phosphorus with no P −H bond, then A is (1) White P4 (2) Red P (3) H3 PO3 (4) P2O3
What This Question Tests
This question requires knowledge of the reaction of phosphorus allotropes/oxides with alkali and the structural features of oxoacids of phosphorus, specifically identifying the one with no P-H bonds.
Concepts Tested
📚 NCERT Sections This Tests
8.17 — Complete Each Synthesis By Giving Missing Starting Material, Reagent Or Products
Chemistry Class 12 · Chapter 8
8.17 Complete each synthesis by giving missing starting material, reagent or products
7.17 — Give Equations Of The Following Reactions:
Chemistry Class 12 · Chapter 7
7.17 Give equations of the following reactions: (i) Oxidation of propan-1-ol with alkaline KMnO4 solution. (ii) Bromine in CS2 with phenol. (iii) Dilute HNO3 with phenol. (iv) Treating phenol wih chloroform in presence of aqueous NaOH.
9.9 — Give The Structures Of A, B And C In The Following Reactions:
Chemistry Class 12 · Chapter 9
9.9 Give the structures of A, B and C in the following reactions: B NaOH Br 2 C (i) CH 3 CH 2 I NaCN A Partial OHhydrolysis CuCN H 2 O/H NH 3 (ii) C 6 H 5 N 2 Cl A B C 4 B HNO 2 C (iii) CH 3 CH 2 Br KCN A LiAlH 0 C 2 2 O/H HCl B H C (iv) C6 H 5 NO 2 Fe/HCl A NaNO273 K 3 A NaOBr B NaNO 2 /HCl C (v) CH 3 COOH NH 2 B C 6 H 5 OH C (vi) C6 H 5 NO 2 Fe/HCl A HNO273K 279 Amines Reprint 2025-26
📋 Question Details
- Chapter
- p-block Elements
- Topic
- Oxoacids of Phosphorus
- Year
- 2022
- Shift
- 26 Jun Shift 1
- Q Number
- Q42
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 7: p-block Elements
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