8 Questions
What gives the colour to a dye?
The part of light reflected back
What are dyes capable of resisting?
Acidic and alkaline substances
Where were the early colouring materials extracted from?
Plants and insects
What is the modern method of producing colouring substances?
Synthesizing substances in factories
What is a dye?
A coloured organic compound capable of absorbing light in the visible region of the electromagnetic spectrum and imparting color to textiles, foodstuffs, silk, wool, and other objects.
How is the colour of a dye determined?
The colour of a dye is determined by the part of the light which is reflected back, which is complementary to the colour absorbed.
What were the early sources of colouring materials?
In the early times, the colouring materials were extracted from natural sources like plants and insects.
What are dyes capable of resisting?
Dyes are capable of getting fixed to fabrics/objects permanently and are resistant to the action of water, soap, light, acid, and alkalies.
Test your knowledge of dyes with this quiz! Learn about the properties, uses, and applications of dyes in textiles, food, and more. Explore how dyes absorb and reflect light to create vibrant colors.
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