Solutions of ferrous sulphate, zinc sulphate, copper sulphate and alum – InterviewSolution

1.	Solutions of ferrous sulphate, zinc sulphate, copper sulphate and aluminium sulphate were separately taken in four test-tubes and some iron nails were placed in each of the solutions. What will you observe after few seconds?
Answer» Iron will react only with CuSO₄ solution as Fe is more reactive than Cu.

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