What are the differences between minerals and ores?

What are the various steps involved in the extraction of pure metals from their ores?

What is the role of quick lime in the extraction of Iron from its oxide Fe₂O₃?

Give the uses of zinc.

Explain the electrometallurgy of aluminium.

Give the basic requirement for vapour phase refining.

Describe the role of the following in the process mentioned.
(i) Silica in the extraction of copper.
(ii) Cryolite in the extraction of aluminium.
(iii) Iodine in the refining of Zirconium.
(iv) Sodium cyanide in froth floatation.

The selection of reducing agent depends on the thermodynamic factor: Explain with an example.