If a spoon of copper metal is placed in a solution of ferrous sulphate :
(l) Cu will precipitate out
(2) Iron will precipitate
(3) Cu and Fe will precipitate
(4) No reaction will take place

There will be no reaction as copper is less reactive than iron, or iron has more oxidizing power than copper. Hence copper cannot displace the iron in ferrous sulphate solution.

Option 4 is the right answer.

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