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Sodium Thiosulphate

Bottles conta...

Question

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 test tubes and boiled with NaOH solution. The end solution in each tube was made acidic with dilute $H N O_{3}$ and some $A g N O_{3}$ solution added. Solution B gave a yellow precipitate. Which one of the following statements is true for the experiment?

A

Addition of

H N O_{3}

was unnecessary

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B

A was

C_{6} H_{5} I

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C

A was

C_{6} H_{5} C H_{2} I

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D

B was

C_{6} H_{5} I

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Solution

The correct option is B A was $C_{6} H_{5} I$
Any halides that do not contain electron withdrawing group generally don't react with nucleophiles.
nucleophilic substitution further with $H N O_{3}$ , forming yellow precipitate.

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