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In the Liebermann's nitroso reaction, se...

In the Liebermann's nitroso reaction, sequential changes in the colour of phenol occurs as

A

Brown or red `to` green`to` red`to` deep blue

B

Red `to` deep blue `to` green

C

Red `to` green `to` white

D

White `to` red `to` green

Text Solution

Verified by Experts

The correct Answer is:
A
In Liebermann nitroso reaction, the uncharged "indophenol" is red, delocalization is less important and the compound is less deeply coloured. But in alkali, the compound becomes deep blue again.
This can be used as a test for phenols.
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