JEE Main Chemistry question

The hair dyes available in the market generally contain two bottles, one containing the dye and the other hydrogen peroxide. Before applying the dye, the two solutions are mixed. The hydrogen peroxide.

(A)Is added to dilute the solution of the dye
(B)Oxidises the dye to give the desired colourCorrect
(C)Reduces the dye to give the desired colour
(D)Acidifies the solution of the dye

Answer: (B)

Solution

In oxidative hair-dye systems, the colourless dye precursor (often a diamine) is oxidised by HO to generate the actual coloured dye molecules in situ, which is why the peroxide component is mixed in only

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Question ID VK-137297