Froth flotation process is employed in  ________ ores.

The purest zinc is made by

_____ is the process used for the manufacture of steel from pig iron.

Scientific and technological process used for isolation of the metal from its ores is known as ________.

Ore associated with rock impurities are called:

Which of the following ores is an ore of copper?

Which element has the largest abundance in the earth’s crust?

In the electrolytic refining of copper _______ is made anode.

The ore that is concentrated by forth floatation process is

Cinnabar is