DENDROLOGY AND SOCIETY
MORPHOLOGY AND IDENTIFICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following plants is used to extract the blue dye?
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Trifolium
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Indigofera
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Lupin
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Cassia
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Explanation:
Detailed explanation-1: -Solution: 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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