Q43. The given reaction can occur in the presence of : JEE Main 2021 (25 Jul Shift 1) JEE Main Previous Year Paper (a) Bromine water (b) Br2 in CS2, 273 K (c) Br2 / FeBr3 (d) Br2 in CHCl3, 273 K Choose the correct answer from the options given below: (1) (b) and (d) only (2) (a) and (c) only (3) (b), (c) and (d) only (4) (a), (b) and (d) only
What This Question Tests
This question tests the understanding of electrophilic substitution reactions, specifically the halogenation of aromatic compounds and the necessary reagents and conditions for such reactions. (Note: The specific reaction image is missing from the prompt, but the options relate to bromination of benzene).
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.
6.22 — What Happens When
Chemistry Class 12 · Chapter 6
6.22 What happens when (i) n-butyl chloride is treated with alcoholic KOH, (ii) bromobenzene is treated with Mg in the presence of dry ether, (iii) chlorobenzene is subjected to hydrolysis, (iv) ethyl chloride is treated with aqueous KOH, (v) methyl bromide is treated with sodium in the presence of dry ether, (vi) methyl chloride is treated with KCN? Answers to Some Intext Questions 6.1 6.2 (i) H2SO4 cannot be used along with KI in the conversion of an alcohol to an alkyl iodide as it converts KI to corresponding acid, HI which is then oxidised by it to I2. 6.3 (i) ClCH2CH2CH2Cl (ii) ClCH2CHClCH3 (iii) Cl2CHCH2CH3 (iv) CH3CCl2CH3 191 Haloalkanes and Haloarenes Reprint 2025-26
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
- Haloalkanes & Haloarenes
- Topic
- Electrophilic substitution in aromatic compounds
- Year
- 2021
- Shift
- 25 Jul Shift 1
- Q Number
- Q43
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 10: Haloalkanes & Haloarenes
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