question_answer

Bottles containing \[{{C}_{6}}{{H}_{5}}I\] and \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}I\] lost their original labels. They were labelled A and B for testing. A and B were separately taken in a test tube and boiled with \[NaOH\] solution. The end solution in each tube was made acidic with dilute \[HN{{O}_{3}}\] and then some \[AgN{{O}_{3}}\] solution was added. Substance B gave a yellow precipitate. Which one of the following statements is true for this experiment?     AIEEE  Solved  Paper-2003

A) A was \[{{C}_{6}}{{H}_{5}}l\]      

B)       A was \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}l\]

C)   B was \[{{C}_{6}}{{H}_{5}}l\]      

D) Addition of \[HN{{O}_{3}}\] was unnecessary

Correct Answer: A

Solution :

C ?I bond is stable in \[{{C}_{6}}{{H}_{5}}l\]             C?I bond is reactive in \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}l\].