Q45.Identify the reagents used for the following conversion (1) A = LiAlH4, B = NaOH(aq), C = NH2 −NH2 / KOH ethylene glycol (2) A = LiAlH4, B = NaOH(alc) , C = Zn / HCl (3) A = DIBAL −H, B = NaOH(aq) C = NH2 −NH2 / KOH ethylene glycol (4) A = DIBAL −H, B = NaOH(alc), C = Zn / HCl
What This Question Tests
This question requires identifying a sequence of reagents to perform specific transformations: reduction of an ester to an aldehyde, then to an alcohol, and finally reduction of an aldehyde to an alkane, testing knowledge of selective reducing agents.
Concepts Tested
📚 NCERT Sections This Tests
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
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
📋 Question Details
- Chapter
- Aldehydes Ketones Carboxylic Acids
- Topic
- Reduction of Carboxylic Acids and Esters
- Year
- 2024
- Shift
- 29 Jan Shift 2
- Q Number
- Q45
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 12: Aldehydes, Ketones and Carboxylic Acids
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