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What colour is obtained if condensed pyrolyzate of polyacrylonitrile is made alkaline and boiled with ferrous sulphate followed by acidification?

What colour is obtained if condensed pyrolyzate of polyacrylonitrile is made alkaline and boiled with ferrous sulphate followed by acidification? Correct Answer prussian blue

Prussian blue precipitate is obtained on the treatment of pyrozylate of polyacrylonitrile.

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