A) \[\text{N}{{\text{O}}_{2}}\] group
B) \[\text{ }\!\!~\!\!\text{ N}{{\text{H}}_{\text{2}}}\] group .
C) azo group
D) OH group
Correct Answer: C
Solution :
The chromophore group in the final compound is azo group\[(-N=N-)\]You need to login to perform this action.
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