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Which of the following plants is used to...

Which of the following plants is used to extract the blue dye ?

A

Trifolium

B

Indigofera

C

Lupin

D

Cassia

Text Solution

Verified by Experts

The correct Answer is:
B
Indigo (blue dye) is obtained from the leaves of indigofera tinctoria and `I`. Suffruticosa. The leaves contain a colourless chemical which on exposure to air turns bluish.
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