Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
An organic compound $X$ on treatment with PCC in dichloromethane gives the compound $Y$. Compound $Y$ reacts with $\mathrm{I}_{2}$ and alkali to form yellow precipitate of triiodomethane. The compound $X$ is
ChemistryAldehydes and KetonesKCETKCET 2021
Options:
  • A $\mathrm{CH}_{3} \mathrm{CHO}$
  • B $\mathrm{CH}_{3} \mathrm{COCH}_{3}$
  • C $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}$
  • D $\mathrm{CH}_{3} \mathrm{COOH}$
Solution:
1011 Upvotes Verified Answer
The correct answer is: $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}$
Compound $(Y)$ gives iodoform test, that means it contains acetyl group


PCC is an oxidising agent which oxidised the alcohol to aldehyde or ketone (depends upon the reactant alcohol). That means $X$ is an alcohol.
From the given information, it is concluded that the compound $X$ is an alcohol (which contain two carbon). Thus, the alcohol is $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}$.
The reaction involves are as follows:

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.