Q53.The treatment of CH3MgX with CH3C ≡C −H produces (1) (2) CH3 −CH = CH2 (3) (4)
What This Question Tests
This question tests the understanding of the acid-base reactivity of Grignard reagents with compounds containing acidic protons, specifically the acetylenic hydrogen of terminal alkynes.
Concepts Tested
📚 NCERT Sections This Tests
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
7.20 — 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.
7.13 — Show How Will You Synthesise:
Chemistry Class 12 · Chapter 7
7.13 Show how will you synthesise: (i) 1-phenylethanol from a suitable alkene. (ii) cyclohexylmethanol using an alkyl halide by an SN2 reaction. (iii) pentan-1-ol using a suitable alkyl halide?
📋 Question Details
- Chapter
- Haloalkanes & Haloarenes
- Topic
- Reactions of Grignard Reagents
- Year
- 2008
- Shift
- Unknown
- Q Number
- Q53
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 10: Haloalkanes and Haloarenes; Class 11 Chemistry Ch 13: Hydrocarbons
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Q67.The organic chloro compound, which shows complete stereochemical inversion during a SN2 reaction, is (1) (C2H5)2CHCl (2) (CH3)3CCl (3) (CH3)2CHCl (4) CH3Cl