✓ Board-verified
Chemistry · 2024 · 3 marks
CBSE 2024 · Region 4 · Set 2 · Q28
Write chemical equations for the following reactions: (Do any three) (a) Hydroboration - oxidation reaction (b) Williamson Synthesis (c)…
Write chemical equations for the following reactions : (Do any three)
(a)
Hydroboration - oxidation reaction
(b)
Williamson Synthesis
(c)
Friedel-Crafts Alkylation of Anisole
(d)
Reimer-Tiemann Reaction $\displaystyle \mathbf{1} \boldsymbol{\times} \mathbf{3}$
Marking-scheme solution
(a) \(\displaystyle \mathrm{CH}_{3}-\mathrm{CH}=\mathrm{CH}_{2} \xrightarrow[\text { 2. } \mathrm{H}_{2} \mathrm{O}_{2}, \overline{\mathrm{O}} \mathrm{H}]{\text { 1. } \mathrm{B}_{2} \mathbf{H}_{6}} \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CH}_{2}-\mathrm{OH}\)
(b) 
(c) 
(d) 
All Alcohols, Phenols and Ethers questions2024 question paperNCERT solutions: Alcohols, Phenols and EthersPractice Alcohols, Phenols and Ethers →
More from Alcohols, Phenols and Ethers
- In the reaction R-OH+HCl →ZnCl_2 RCl+H_2 O, what is the correct order of reactivity of alcohols?2025 · asked 2×
- Assertion: Alcohols act as Bronsted bases as well as Bronsted acids. Reason (R): Alcohols react as both nucleophiles and electrophiles. []2026
- Show how you will synthesise: from a suitable alkene. from methanal using a suitable Grignard reagent.2023
- Assertion: p-nitrophenol is less acidic than phenol. Reason (R): Nitro group is electron withdrawing and helps in the stabilisation of…2024
- Sodium phenoxide when heated with CO_2 under pressure, followed by acidification, yields:2023
- Can sodium ethoxide and t-butyl chloride be used for the preparation of t-butyl ethyl ether? Give suitable explanation. Justify your answer by…2025
- What will be formed after oxidation reaction of secondary alcohol with chromic anhydride (CrO_3)?2025
- Which of the following alcohols will not undergo oxidation?2023
CBSE Class 12 Chemistry past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.