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Question

Diphenyl amine gives a deep blue colour with a solution of :
$F e^{3 +}$
$N O_{3}^{-}$
$N O_{2}^{-}$
$C l^{-}$

A

C l^{-}

B

N O_{3}^{-}

C

F e^{3 +}

D

N O_{2}^{-}

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Solution

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Oxidizing agents like $F e^{3 +}, N O_{3}^{-}$ and $N O_{2}^{-}$ give deep blue colour with diphenyl amine.

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