Question

2. The compound containing chromophoric groups are called -
(a) auxochrome (1) chromogen (c) azo dye (d) vat dye​

Answer 1

Answer:

a) is option

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Answer 2

A dye is nothing but the colored substances always contains Chromophore group. That is called as (b) Chromogen.

Chromogens

• Mainly the color of the organic substances is due to the presence of some unsaturation in the compound which is called as chromophores.
• Examples of chromophores are azo, azoxy, carbonyl groups and so on.,
• These chromophores which absorb the wavelength of white light and reflects back the supplementary color.
• A colored substance containing a chromophore is termed as (b) chromogen.