Hydrated alumina is heated to give back pure Al₂O₃ .The temperature require is

Most abundant metal is

Heating of ores are called

The technique very useful for low boiling metals like Zinc and Mercury is

Cinnabar is an ore of

The method used for the refining of Ti is

In the electrolytic cell for the extraction of Al, the gases formed in anode are

The Iron obtained from blast furnace is called

Which scrap is more suitable for reducing the leached copper ore?

The naturally occuring chemical substances in the earth's crust obtainable by mining are called