An ore on treatment with dilute HCl gives a smell like that of rotten eggs. What type of ore is it? Give equations and explain the operation required to obtain metal from its ore.

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Solution

The smell of rotten egg is given by sulphide ores only because the sulphur has the characteristic smell of rotten egg.
The sulphide ores are concentrated by froth floatation method. The metals are obtained from the conc. ores by using pyrometallurgy, or smelting at high temperatures, in which process the sulfur in the metal sulfide is oxidized with air or oxygen to sulfur dioxide, and molten metal is produced.

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