Q48.Match List - I with List - II. List - I List - II (Chemical Reaction) (Reagent used) CH3 MgBr /H3O+ a CH3 COOCH2 CH3 →CH3 CH2 OH i (one equivalent) b CH3 COOCH3 →CH3 CHO ii H2 SO4 /H2O c CH3 C ≡N →CH3 CHO iii DIBAL −H/H2O d iv SnCl2, HCl /H2O Choose the most appropriate match. (1) (a) −(ii), (b) −(iii), (c) −(iv), (d) −(i) (2) (a) −(ii), (b) −(iv), (c) −(iii), (d) −(i) (3) (a) −(iii), (b) −(ii), (c) −(i), (d) −(iv) (4) (a) −(iv), (b) −(ii), (c) −(iii), (d) −(i)
What This Question Tests
This question requires matching specific chemical reactions involving reduction of esters and nitriles to the appropriate reagents (Grignard, DIBAL-H, SnCl2/HCl).
Concepts Tested
📚 NCERT Sections This Tests
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
7.20 — How Are The Following Conversions Carried Out?
Chemistry Class 12 · Chapter 7
7.20 How are the following conversions carried out? (i) Propene ® Propan-2-ol. (ii) Benzyl chloride ® Benzyl alcohol. (iii) Ethyl magnesium chloride ® Propan-1-ol. (iv) Methyl magnesium bromide ® 2-Methylpropan-2-ol.
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.
📋 Question Details
- Chapter
- Aldehydes Ketones Carboxylic Acids
- Topic
- Reduction reactions
- Year
- 2021
- Shift
- 26 Aug Shift 2
- Q Number
- Q48
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 12: Aldehydes, Ketones and Carboxylic Acids
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