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Give a brief description of the method of producing indigo dye?

Class: Class 8 Subject: Social Studies Topic: History

The indigo leaves were fermented in a steeping vat. Then the liquid was extracted and oxidized in a beating vat. Finally a blue precipitate was allowed to form from the liquid in a settling vat. This precipitate was collected, dried, and compacted. This dried compacted material is the indigo dye.

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Give a brief description of the method of producing indigo dye?

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