Food cans are coated with tin and not zinc because

1. Zinc is costlier than tin
2. Zinc has higher melting point than tin
3. Zinc is more reactive than tin
4. Zinc is less reactive than tin

You are given a hammer, a battery, a bulb, wires and switch.

(a) How could you use them to distinguish between samples of metals and non-metals?

(b) Asses the usefulness of these tests in distinguishing between metals and non-metals?

Name two metals which will displace hydrogen from dilute acids, and two metals which will not.

In the electrolytic refining of a metal M, what would you take as the anode, the cathode and the electrolyte?