A mixture of chlorides of copper, cadmium, chromium, iron and aluminiu – InterviewSolution

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1.	A mixture of chlorides of copper, cadmium, chromium, iron and aluminium was dissolved in water acidified with HCl and hydrogen sulphide was was passed for sufficient time. It was filtered, boiled and a few drops of nitric acid were added while boiling. To this solution ammonium chloride and sodium hydroxide were added in excess and filtrate shall give test for-
Answer» SODIUM ion sodium, chromium and ALUMINIUM ion aluminium and IRON ion sodium, iron, cadmium and aluminium ion Answer :B

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