Question

Which of the following is a chromophore of azodyes?

• A. $>C=O$
• B. $NO$
• C. $-N\equiv N-$
• D. $-{NO}_2$

Answer 1

The correct option is C $-N\equiv N-$

Azodyes are most widely used chromophores in dye chemistry. This type of type is used in many different dye classes in the textile dyeing industry and generally absorbs between $350$ and $650$ $nm$, as shown above.