JEE MAIN - Chemistry (2021 - 1st September Evening Shift - No. 12)

The potassium ferrocyanide solution gives a Prussian blue colour, when added to :
CoCl3
FeCl2
CoCl2
FeCl3

Explanation

FeCl3 + K4[Fe(CN)6] $$\to$$ Fe4[Fe(CN)6]3 (Prussian blue)

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