Assertion : Colour of copper sulphate solution changes when an iron nail is kept immersed in it.
Reason :The colour of copper sulphate solution change when iron nail is kept immersed it due to the decomposition reaction taking place between iron and copper leading to formation of iron sulphate.

Options

A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true and R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true.

Answer

C