Discuss a method for the purification of impure naphthalene.

Poling is used for the purification of:

Poling is used for the purification of:

Which methods would you recommed for the purification of impure metals such as zinc. Copper and germanium metals ?

Method employed for the purification of copper.

What is Naphthalene

The purification of alumina is called

Discuss the chromatographic method for purification of crude metals.

NaCN used in the froth floatation method for the purification of ore is

When is 'polling' used as the method of purification of metals ?

When is 'polling' used as the method of purification of metals ?