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Chemistry · General Organic Chemistry

JEE Main 2026 — 24 January, Morning Shift — Question 61

Arrange the following carbanions in the decreasing order of stability

I. p−Br−C6H4−⊖C¨H2p-\mathrm{Br}-\mathrm{C}_{6} \mathrm{H}_{4}-\underset{\ddot{\mathrm{C}} \mathrm{H}_{2}}{\ominus}

II. C6H5−C⊖⊖H2\mathrm{C}_{6} \mathrm{H}_{5}-\stackrel{\ominus}{\stackrel{\ominus}{\mathrm{C}}} \mathrm{H}_{2}

III. p−CH3O−C6H4−C⊖⊖H2p-\mathrm{CH}_{3} \mathrm{O}-\mathrm{C}_{6} \mathrm{H}_{4}-\stackrel{\ominus}{\stackrel{\ominus}{\mathrm{C}}} \mathrm{H}_{2}

IV. p−CHO−C6H4−C⊖⊖H2p-\mathrm{CHO}-\mathrm{C}_{6} \mathrm{H}_{4}-\stackrel{\ominus}{\stackrel{\ominus}{\mathrm{C}}} \mathrm{H}_{2}

V. p−CH3−C6H4−C⊖⊖H2p-\mathrm{CH}_{3}-\mathrm{C}_{6} \mathrm{H}_{4}-\stackrel{\ominus}{\stackrel{\ominus}{\mathrm{C}}} \mathrm{H}_{2}

Choose the correct answer from the options given below :

  1. Option A:

    I >> II >> IV >> V >> III

  2. Option B:

    I >> IV >> II >> V >> III

  3. Option C:

    IV >> I >> II >> V >> III

    Correct
  4. Option D:

    IV >> II >> I >> III >> V

Answer: C

Step-by-step solution

Electron withdrawing groups increases stability of carbanion and electron donating groups decreases stability of carbanion.

Answer key and solution verified before publishing.

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Exam
JEE Main 2026
Paper
24 January, Morning Shift
Subject
Chemistry
Chapter
General Organic Chemistry
Topic
Other applications of electronic effects
Arrange the following carbanions in the decreasing order of stability… | JEE Main 2026 PYQ with Solution · DhiX AI