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Chemistry · Aldehydes and Ketones

JEE Main 2024 — 9 April, Shift 2 — Question 63

Which of the following compound can give positive iodoform test when treated with aqueous KOH solution followed by potassium hypoiodite.

  1. Option A:
                                    O                               ∥CH3CH2−C−CH2CH3\begin{aligned}& \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\parallel \\ & C{{H}_{3}}C{{H}_{2}}-C-C{{H}_{2}}C{{H}_{3}} \\ \end{aligned}
    Option A figure
  2. Option B:
                                     CI                                  ∣CH3CH2−C−CH3                                   ∣                                   CI\begin{aligned}& \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,CI \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\left. {} \right| \\ & C{{H}_{3}}C{{H}_{2}}-C-C{{H}_{3}} \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\left. {} \right| \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,CI \\ \end{aligned}
    Correct
  3. Option C:

    CH3CH2CH2CHO\text{C}{{\text{H}}_{3}}\text{C}{{\text{H}}_{2}}\text{C}{{\text{H}}_{2}}\text{CHO}

  4. Option D:
                                             O                                     /         \CH3CH2−CH−CH2\begin{aligned}& \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,/\,\,\,\,\,\,\,\,\,\backslash \\ & C{{H}_{3}}C{{H}_{2}}-CH-C{{H}_{2}} \\ \end{aligned}

Answer: B

Step-by-step solution

Sol.

figure

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Exam
JEE Main 2024
Paper
9 April, Shift 2
Subject
Chemistry
Chapter
Aldehydes and Ketones
Topic
Physical properties, Uses and Tests for Carbonyl Compound

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