JEE Main 2026 — Chemistry Organic Chemistry

2026mcqmedium

Given below are two statements :

Statement (I) : Benzyl chloride reacts faster in $S_N1$ mechanism than ethyl chloride.

Statement (II) : Ethyl carbocation intermediate is less stabilized by hyperconjugation than benzyl carbocation by resonance.

In the light of the above statements, choose the correct answer from the options given below :

Official previous-year question

Held on 2 Apr 2026 · Verified 6 Jul 2026.

Options

A
Both Statement I and Statement II are true
B
Both Statement I and Statement II are false
C
Statement I is true but Statement II is false
D
Statement I is false but Statement II is true

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Solution

The rate of $S_N1$ reaction depends on the stability of the carbocation intermediate formed during the rate-determining step.

Benzyl chloride undergoes ionization to form a benzyl carbocation ( $C_6H_5CH_2^+$ ), whereas ethyl chloride forms an ethyl carbocation ( $CH_3CH_2^+$ ). The benzyl carbocation is highly stabilized by the delocalization of the positive charge over the benzene ring through resonance. On the other hand, the ethyl carbocation is stabilized only by hyperconjugation involving three $\alpha$ -hydrogens.

Since resonance provides significantly greater stabilization than hyperconjugation, the benzyl carbocation is much more stable than the ethyl carbocation. Consequently, benzyl chloride reacts faster in the $S_N1$ mechanism than ethyl chloride. Thus, Statement I is true.

Statement II correctly explains that the ethyl carbocation intermediate is less stabilized by hyperconjugation compared to the resonance stabilization of the benzyl carbocation. Thus, Statement II is also true.

Both Statement I and Statement II are true.

Answer: Both Statement I and Statement II are true

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Solution

The rate of $S_N1$ reaction depends on the stability of the carbocation intermediate formed during the rate-determining step.

Both Statement I and Statement II are true.

Answer: Both Statement I and Statement II are true

JEE Main 2026 — Chemistry Organic Chemistry

Options

Did you get this right?

Solution

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JEE Main 2026 — Chemistry Organic Chemistry

Options

Did you get this right?

Solution

Your note

JEE Main Organic Chemistry in other years

More JEE Main Organic Chemistry questions

Other Chemistry topics for JEE Main

Physical Chemistry

Inorganic Chemistry

Keep practicing Organic Chemistry