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BITSAT 2013 Solved Question Paper

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Question : 79

Total: 150

A mixture of chlorides of copper, cadmium, chromium, iron and aluminium was dissolved in water acidified with HCl and hydrogen sulphide gas 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 and filtered. The filterate shall give test for.

Sodium and iron
Sodium and aluminium
Aluminium and iron
Sodium, iron, cadmium and Al

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