Q16 / 92 · NTA Abhyas (NEET) 2020 · Chemistry · Chemistry in Everyday Life
Which of the following is not a chromophore
- A
- B
- C
- Correct answerD
Solution
A dye molecule is made up of two different part (i) Chromophore (ii) Auxochrome. The groups which produce colour in a compound i.e., chromophores are usual unsaturated groups like nitro, nitroso, azo, azoxy, carbonyl and olefinic bonds Auxochrome are usually acidic / basic functional group like .
A compound containing only a chromophore may be coloured material but not a dye. For example azo benzene is red coloured but not a dye. Where as para amino azobenzene (anilineyellow) is a dye.
A compound containing only a chromophore may be coloured material but not a dye. For example azo benzene is red coloured but not a dye. Where as para amino azobenzene (anilineyellow) is a dye.
Hence, the correct answer is option: 'D'.