Q39.A compound 'A' on reaction with 'X' and 'Y produces the same major product but different by product 'a' and 'b'. Oxidation of 'a' gives a substance produced by ants. JEE Main 2022 (25 Jul Shift 1) JEE Main Previous Year Paper 'X' and 'Y' respectively are (1) KMnO4 / H+and dil. KMnO4, 273 K (2) KMnO4,(dilute), 273 K and KMnO4 / H+ (3) KMnO4 / H+ and O3, H2O / Zn (4) O3, H2O / Zn and KMnO4 / H+
What This Question Tests
The question tests the reaction of BF3 with NaH to form borane, followed by its reaction with a Lewis base (NMe3) to form an adduct, and requires determining the geometry around boron based on hybridization changes.
Concepts Tested
📚 NCERT Sections This Tests
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.
7.21 — Name The Reagents Used In The Following Reactions:
Chemistry Class 12 · Chapter 7
7.21 Name the reagents used in the following reactions: (i) Oxidation of a primary alcohol to carboxylic acid. (ii) Oxidation of a primary alcohol to aldehyde. (iii) Bromination of phenol to 2,4,6-tribromophenol. (iv) Benzyl alcohol to benzoic acid. (v) Dehydration of propan-2-ol to propene. (vi) Butan-2-one to butan-2-ol.
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
- Chemical Bonding
- Topic
- Boron Compounds and Hybridization
- Year
- 2022
- Shift
- 25 Jul Shift 1
- Q Number
- Q39
- Type
- MCQ
- NCERT Ref
- Class 11 Chemistry Ch 4: Chemical Bonding and Molecular Structure
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