Gravity separation process is used for the concentration of

Slag is represented by

Froth flotation process is employed in  ________ ores.

__________  method is suitable for the purification of Hematite.

Which of the following is an Epsom salt ?

Argentite is a mineral of 

Bessemer converter is used for the preparation of 

__________ is an example for oxide ore.

Bauxite is :

The slag formed in extraction of copper is