A dye imparts red colour on fabric. What colour of light was absorbed by the dye?

What imparts green colour to a leaf?

The plant dye Henna imparts orange-red colour to skin and hairs due to its reaction with which of the following?

Which imparts brick red colour to the flame ?

Which imparts brick red colour to the flame ?

Red colour can be imparted to glass by

What is the ratio of velocity of red colour light to velocity of violet colour of light in vacuum ?