Q42.The correct match between Item-I (starting material) and Item-II (reagent) for the preparation of benzaldehyde is : Item-I Item-II (I) Benzene (P) HCl and SnCl2, H3O+ (II) Benzonitrile (Q) H2, Pd −BaSO4, S and quinoline (III) Benzoyl Chloride (R) Co, HCl and AlCl3 (1) (I)-(Q), (II)-(R) and (III)-(P) (2) (I)-(P), (II)-(Q) and (III)-(R) (3) (I)-(R), (II)-(P) and (III)-(Q) (4) (I)-(R), (II)-(Q) and (III)-(P)
What This Question Tests
This question assesses the knowledge of specific named reactions used for the synthesis of benzaldehyde from different starting materials, requiring recall of reagents for each reaction.
Concepts Tested
📚 NCERT Sections This Tests
9.8 — Accomplish The Following Conversions:
Chemistry Class 12 · Chapter 9
9.8 Accomplish the following conversions: (i) Nitrobenzene to benzoic acid (ii) Benzene to m-bromophenol (iii) Benzoic acid to aniline (iv) Aniline to 2,4,6-tribromofluorobenzene (v) Benzyl chloride to 2-phenylethanamine (vi) Chlorobenzene to p-chloroaniline (vii) Aniline to p-bromoaniline (viii) Benzamide to toluene (ix) Aniline to benzyl alcohol.
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
7.21 — 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
- Preparation of aldehydes (Benzaldehyde)
- Year
- 2020
- Shift
- 06 Sep Shift 2
- Q Number
- Q42
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 12: Aldehydes, Ketones and Carboxylic Acids
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