(d) Name one metal that displaces copper from copper sulphate solution and one which does not.

(e) Name one metal that displaces silver from silver nitrate solution and one which does not.

Solutions:

(c) Lead has higher reactivity than hydrogen, while copper has a lower reactivity.

(d) Copper is displaced from copper sulphate solution by zinc, whereas mercury is not displaced by copper sulphate solution by mercury.

(e) Copper, but not gold, displaces silver from silver nitrate.