Explain the three methods that are used for the reduction of metal oxide to metal.

Smelting is the reduction of oxide to metal by :

Give reason for the statement. Thermite process is used for the reduction of metal oxide.

Name the method used for the refining of copper metal.

Although thermodynamically feasible in practice magnesium metal is not used for the reduction of alumina in the metallurgy of aluminium . why?

Fill in the blanks : For reduction of metal oxide to metal Delta G must be …………..

Write the different methods employed for refining of metals.