A solution of `CuSO_4` was kept in an iron pot. After a few days the iron pot was found to have a number of holes in it. Explain the reasons in terms of reactivity. Write the equations of the reaction involved.

A thin zinc plate was kept ina glass container having CuSO_4 solution. On examining it was found that the blue colour of the solution is getting lighter. After a few days when the zinc plate was taken out of the solution, a number of small holes were noticed in it. State the reason and write chemical equation of the reaction.

What happens when: Iron nails are placed in a copper sulphate solution ? Write word equation of the reaction involved.

A few normal seedlings of tomato were kept in a dark room. After a few days they were found to have become show coloured like albions. Which of the following terms will you use to describe them?

Copper sulphate solution is stored in an iron container. after some days holes were seen in the container. write the reaction explain the reaction.

An element A burns with golden flame in air. It reacts with another element B, atomic number 17 to give a product C. An aqueous a solution of product C on electrolysis gives a compound D and liberates hydrogen. Identify A,B,C or D. Also write down the equations for the reaction involved.

Describe the preparation of potassium permanganate. How does the acidified permanganate solution react with (i) iron(II) ions Write the ionic equations for the reactions