. A zinc plate was put into a solution of copper sulphate kept in a glass container. It was found that blue colour of the solution gets fader and fader with the passage of time. After few days, when zinc plate was taken out of the solution, a number of holes were observed on it. (i) Mention the colour of zinc metal and copper sulphate solution. (ii) State the reason for change observed on the zinc plate. (iii) Write the chemical equation for the reaction involve​