The process of heating the ore strongly in excess of air so that the volatile impurities are removed and the ore is changed to oxide is known as [AMU 1985; NCERT 1990]

The process of heating the ore strongly in excess of air so that the v

1.	The process of heating the ore strongly in excess of air so that the volatile impurities are removed and the ore is changed to oxide is known as [AMU 1985; NCERT 1990]
A.	Calcination
B.	Roasting
C.	Froth floatation
D.	Leaching
Answer» C. Froth floatation

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The process of heating the ore strongly in excess of air so that the volatile impurities are removed and the ore is changed to oxide is known as [AMU 1985; NCERT 1990]

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