4. Why do you observe a change in colour of the solution of copper sulphate when an iron nail is dropped in it? Why does the shining iron nail become dull?

4. Why do you observe a change in colour of the solution of copper sul

1.	4. Why do you observe a change in colour of the solution of copper sulphate when an iron nail is dropped in it? Why does the shining iron nail become dull?
Answer» tion:ANSWER: When an IRON nail IMMERSED in the solution of copper sulphate than iron DISPLACES copper from the solution of copper sulphate because iron is more reactive than copper. Therefore copper sulphate solution colour changes from blue to pale green