JEE Main 2003 — Haloalkanes And Haloarenes Question with Solution
From: AIEEE 2003
Question
Bottles containing C6H5l and C6H5CH2I lost their original labels. They were labelled A and B for testing A and B were separately taken in test tubes and boiled with NaOH solution. The end solution in each tube was made acidic with dilute HNO3 and then some AgNO3 solution was added. Substance B gave a yellow precipitate. Which one of the following statements is true for this experiment?
Choose an option
Show full solutionCorrect option: D
Correct answer
DA was C6H5I
Step-by-step explanation
{C_6}{H_5}I\,\,\buildrel {NaOH} \over
\longrightarrow \,\,{C_6}{H_5}ONa\,\,\buildrel {HN{O_3}/{H^ + }} \over
\longrightarrow
No yellow ppt.
{C_6}{H_5}C{H_2}I\,\,\buildrel {NaOH} \over \longrightarrow \,\,{C_6}{H_5}C{H_2}ONa\,\,\buildrel {HN{O_3}/{H^ + }} \over \longrightarrow
yellow ppt.
Since benzyl iodide gives yellow ppt. hence this is compound and was phenyl iodide
No yellow ppt.
{C_6}{H_5}C{H_2}I\,\,\buildrel {NaOH} \over \longrightarrow \,\,{C_6}{H_5}C{H_2}ONa\,\,\buildrel {HN{O_3}/{H^ + }} \over \longrightarrow
yellow ppt.
Since benzyl iodide gives yellow ppt. hence this is compound and was phenyl iodide
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Haloalkanes And Haloarenes chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2003, covering the Haloalkanes And Haloarenes chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.