Q46.Which of the following compounds will provide a tertiary alcohol on reaction with excess of CH3 MgBr followed by hydrolysis ? JEE Main 2021 (22 Jul Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)
What This Question Tests
This question evaluates the understanding of how Grignard reagents react with different carbonyl compounds to yield tertiary alcohols.
Concepts Tested
📚 NCERT Sections This Tests
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.
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
- Alcohols Phenols Ethers
- Topic
- Reactions of Grignard Reagents
- Year
- 2021
- Shift
- 22 Jul Shift 1
- Q Number
- Q46
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 11: Alcohols Phenols Ethers
More from this Chapter
Q68.Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives (1) 2,4,6-trinitrobenzene (2) o-nitrophenol (3) p-nitrophenol (4) nitrobenzene
Q41.The number of stereoisomers possible for a compound of the molecular formula CH3 −CH = CH −CH(OH) −Me is : (1) 3 (2) 2 (3) 4 (4) 6
Q56.The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is : (1) benzoic acid (2) salicylaldehyde (3) salicylic acid (4) phthalic acid
Q43.The edge length of a face centered cubic cell of an ionic substance is 508pm. If the radius of the cation is 110pm, the radius of the anion is (1) 288pm (2) 398pm (3) 618pm (4) 144pm