1.

The reagents that can be used to convert benzenediazonium chloride to benzene are_____

Answer»

`SnCl_(2)//HCl`
`CH_(3)CH_(2)OH`
`H_(3)PO_(2)`
`LiAlH_(4)`

Solution :Only `CH_(3)CH_(2)OH and H_(3)PO_(2)` convert benzenediazonium chloride to benzene while `SnCl_(2)//HCl` GIVES `C_(6)H_(5)NHNH_(2)`. Since diazonium salts are PREPARED and used in aqueous solution, therefore, `LiAlH_(4)` cannot used to reduce diazonium salts.


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