What is liquation ?

What do you mean by liquation process of refining of metal ?

Explain liquation process for the refining of metals.

Which of the following statement are correct? (i)The liquation process is used for the purifiction of so (ii) Ca and Mg are extracted by electroloytie reduction (iii)The amalganation method is used in the parification of Ag (iv)The electrometallagical process (electrolysis of fased salts) is employed in extract sodium

Write the short notes on:liquation

Write the principle of liquation?