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JEE · NEET Previous Year Question

$Which among the following species acts as a self indicator?$

Topic: JEE PYQ

Answer: D. Full step-by-step solution below.

A $H_{2} O_{2}$
B $I^{-}$
C $Cr_{2} O_{7}^{2 -}$
D $MnO_{4}^{-}$

Correct answer: D

Solution

(d) Pink colour of MnO_{4}^{-} converts to colourless MnO_{2} after reduction.

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