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Question

Which among the following is a chromophore of azo dyes?

A
CH3C||CH2CH3
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B
NO
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C
N=N
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D
NO2
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Solution

The correct option is C N=N
Chromophore is part of molecule responsible for its colour. For azo dyes , the general formula is RN=NR and the chromophore is the azo group( -N=N- ).

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