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Which is the wrong statement with regards to Indigo

a. Indigo was extracted in India from plants of the Indigo ferra group

b. The chemical structure of Indigo was determined by Baeyer, a German chemist who also synthesized it

c. Indigo is a dark blue solid soluble in water giving a blue solution

d. Indigo is fixed to fabrics by the vat process

Ans. c

(38)

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