BITSAT 2016 Paper

Section: Chemistry

Question : 58 of 150

Marks: +1, -0

Sometimes, the colour observed in Lassaigne’s test for nitrogen is green. It is because

of green colour of ferrous sulphate
ferric ferrocyanide is also green
of green colour of copper sulphate
of excess of Fe3+ ions whose yellow colour makes the blue colour of ferric ferrocyanide to appear green.

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