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

(a) Trifolium

(b) Lupin

(c) Indigofera

(d) Cassia

Answers (1)

The answer is the option (b) Indigofera

Explanation: ‘Indigo’ is a blue colour. And Indigofera is used for blue dye.

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Safeer PP

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