Distinguish between electrolytic methods of reduction and refining.

Give three ways in which the metal zinc differs from the non-metal carbon. At least one of the differences must be a chemical difference.

Explain the following:

Zinc is used to cover iron so as to prevent rusting of iron. Why?

Explain the following:

In construction work, why is the alloy of aluminium-duralumin used rather than pure aluminium?

What is an alloy? How do the properties of an alloy differ from its constituents?

Both brass and bronze contain copper as major constituents. Name other elements in these alloys.