The sunstance which is mixed with the ore for removel of impurities is termed

The substance which is mixed with the ore for removal of impurities is termed as ___________

The substance which is added to ore in order to remove impurities during smelting is called

The removal of impurities from an ore

The sunstance used in the thermite process of reducing metal ores is

The rocky impurities associated with the ore.

Nature of some ores are given. Pick out the method of concentration from the bracket (Magnetic separation, Froth floatation, Levigation, Leaching). i) Ores are lighter and impurities are heavier. ii) Ore is magnetic. But impurities are non-magnetic iii) Uses a solution which dissolves the ore iv) Ore is heavier and impurities are lighter.

Which method of concentration of ore is preferred in the following cases and why ? (i) The ore has higher density particles mixed with a large bulk of low density impurities. (ii) The ore consists of copper sulphide intermixed with clay particles. Give an example of amalgam.

The impurities present in the ore are removed by adding