An iron nail was dropped into copper sulphate solution. After some time, the colour of the solution changed from :

A piece of granulated zinc was dropped into copper sulphate solution. After some time, the colour of the solution changed from:

A piece of granulated zinc was dropped into copper sulphate solution. After some time the colour of the solution changed from:

The colour of copper sulphate solution-

When an iron nail is immersed in copper sulphate solution, the colour of solution changes from blue to green colour, The substance formed is the solution is_________

An iron nail is dropped into a blue- coloured solution of copper sulphate. Will the colour of the solution turn red ?

On keeping iron nails in copper sulphate sulphate solution for2 hours, the colour of solution changes