Embibe Experts Solutions for Chapter: General Principles and Processes of Isolation of Metals (Metallurgy), Exercise 3: Exercise-3

Extraction of zinc from zinc blende is achieved by _____.

Iron is removed from chalcopyrite as:

Oxidation states of the metal in the minerals haematite and magnetite, respectively, are

The metal extracted by leaching with cyanide is

Heating mixture of ${\mathrm{Cu}}_{\mathrm{2}}\mathrm{O} \text{and} {\mathrm{Cu}}_{\mathrm{2}}\mathrm{S}$ will give:

Which method of purification is represented by the following equation ?

In the context of the $\mathrm{Hall}-\mathrm{Heroult}$ process for extraction of $\mathrm{Al}$, which of the following statements is false?

The pair that does $\mathrm{NOT}$ Require calcination is :