AIIMS2009Chemistry-Organic Chemistry

AIIMS 2009 Chemistry Nucleophilic Substitution Reactions MCQ Question

Type: MCQ-conceptual-Medium-Class 11

In solvents like DMSO, acetonitrile, F⁻ ion of dissolved NaF is more reactive than in methyl alcohol. Explain

A

CH₃OH is more polar than DMSO and CH₃CN

B

CH₃OH is less polar than DMSO and CH₃CN

C

unsolvated F⁻ ions in DMSO or CH₃CN acts more efficiently as nucleophile

D

-OH group is a better leaving group than F⁻ ion

Correct Answer

Option C

Detailed Explanation

In methyl alcohol, F- ion is solvated but in DMSO or CH3CN (aprotic solvent) F- ion is not solvated.

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