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

1.	What colour is obtained if condensed pyrolyzate of polyacrylonitrile is made alkaline and boiled with ferrous sulphate followed by acidification?
A.	ruby-red
B.	prussian blue
C.	bright blue
D.	red-brown
Answer» C. bright blue

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

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