Q. The methods chiefly used for the extraction of lead and tin from their ores are respectively
A) Self reduction and carbon reduction
B) Self reduction and electrolytic reduction
C) carbon reduction and self reduction
D) Cyanide process and carbon reduction
Explanation
(a)
The methods chiefly used for the extraction of lead and tin from their ores are respectively self reduction and carbon reduction. (Because the process of heating the ore strongly in the presence of excess of air is called roasting. It is mainly used in case of sulphide ores and the process of extracting a metal by fusion of the oxide ore with carbon is known as smelting.)
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.