Question

iron nail kept in CuSO4,iron nail getting a covering of copper why ?​

Answer 1

HEY MATE!

HERE IS YOUR ANSWER:

IRON NAIL IS MORE REACTIVE THAN COPPER THUS Fe2So4 is formed

Answer 2

Answer:

Because Iron is more reactive then copper that iron displace copper and make its own salt.

The chemical reaction is here.

CuSO₄ + Fe ⇒  FeSO₄ + Cu.