Question

Froth flotation is a process of _?
(A) Oxidation
(B) Reduction
(C) Refining
(D) Concentration

Answer 1

Solids that are occurring in nature in rock as solid form as a crystalline form that are mineral and ore are also occurring in nature in rock as solid form as a crystalline form and ores in which impurity as well as element.

Complete step by step answer:
Ore are occurring in nature in rock as solid form as a crystalline form and ores in which impurity as well as element and the element are extracted from ore by removing impurities from ore by using different methods.
If impurity is large can be seen by naked eye then by using hand impurities can be picked by hand. For extraction of copper from copper pyrites this process of extraction of copper from its ore is done with a froth flotation process. Froth flotation process is a process based on concentration, and this process is mainly used for sulphide ore.
Hence option D is the correct option.

Additional information: In the froth floatation process powdered ore is added in a large tank and the tank contains pine oil. And the mixture of pine oil and powdered ore is agitated by and the mixture of pine oil and powdered ore is agitated by and the mixture of pine oil and powdered ore is agitated by blast of air. And finally impurities are heavier due to heavier nature of impurity that settle down in a tank and the ore mix with pine oil and to form froth. This froth contains pine oil and ore particles this float on the water and this froth can be easily skimmed off.

Note:
Copper pyrite is $CuFe{S_2}$ and it is an ore of copper and all other sulphide ore in different metals is extracted.
Copper pyrite ($CuFe{S_2}$) also known as chalcopyrite.
It is a yellow coloured mineral ore in which one copper, one iron and two sulphur combine with each other and is tetragonal crystalline.