Question

potassium ferrocynide is stored in dark coloured bottles and kept away from sunlught

Answer 1

heya
answer is
potassium ferrocyanide is a yellow coloured compound. if this compound exposed to sunlight, then it will undergo oxidation reaction.
in this reaction Potassium ferrocyanide gets converted into potassium ferricyanide .so to prevent this Oxidation reaction potassium ferrocyanide is stored in dark coloured Bottles And kept away from sunlight