Show that iron is more reactive than copper
1)Which of the following metals is present in the anode mud during the electrolytic refining of copper?

2)An element reacts with oxygen to give a compound with a high melting point. The compound is soluble in water. The element is likely to be

3)The second most abundant metal in the earth’s crust is

4)An alloy of Zn and Cu is dissolved in dil. HCl. Hydrogen gas is evolved. In this evolution of gas

5)A greenish coating develops on copper utensils due to formation of

6)Rusting of iron takes place in

7)An aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that

8)This change in colour of the dipped portion of the iron nail in copper sulphate solution is because of deposition of

9)This activity shows

10)What happens when copper rod is dipped in iron Sulphate solution?