Question

When an iron nail placed in copper sulphate solution which observation

Answer 1

Answer:

when an iron nail is placed in copper sulphate solution the iron nail becomes brownish in colour by deposition of Cu and blue colour of CuSO4 changes to dirty green colour due to formation of FeSO4

this is displacement reaction

Zn + CuSO4 ⏩⏩ ZnSO4 + Cu

Answer 2

Explanation:

Fe+CuSO₄------→FeSO₄+Cu

It is the displacement Reaction.

When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed on the surface of iron and the colour of copper sulphate solution changes from blue to light green.