JEE Main 2014 · 11 Apr · Shift 1 · Chemistry Q53

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ChemistrySingle correct+4 / -1Question 53 of 90

Complete reduction of benzene-diazonium chloride with Zn/HCl gives :

Aniline

Phenylhydrazine

Azobenzene

Hydrazobenzene

Answer and worked solution

Official answer: A

Strong reducing conditions (Zn/HCl) cleave the N-N bond, giving aniline (and $\ce{NH3}$ ). Mild reduction (e.g. $\ce{SnCl2}$ /HCl or sulphite) stops at phenylhydrazine.

Topics:Diazonium salts

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JEE Main 2014 · 11 Apr · Shift 1, Chemistry question 53