NEET UG CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

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A blue colouration is not obtained when:

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Correct option: B

Copper sulphate solution reacts with

{\mathrm{K}_4}[\mathrm{Fe}{\left( {\mathrm{CN}} \right)_6}

]

A blue coloration is not obtained when copper sulphate solution reacts with

{\mathrm{K}_4}[\mathrm{Fe}{\left( {\mathrm{CN}} \right)_6}]

because it forms a chocolate brown precipitate of copper ferrocyanide.

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