Concentration of Ores

In the process of extraction of gold,
$\left[\mathrm{X}\right]+\mathrm{Zn}\stackrel{}{\to }\left[\mathrm{Y}\right]+\mathrm{Au}$

Explain briefly about pulverization.

An ore of tin containing $\mathrm{F}\mathrm{e}\mathrm{C}\mathrm{r}{\mathrm{O}}_4$ is concentrated by

Which one of the following ores is best concentrated by froth flotation method?

Copper metal, from low grade copper ores, can be extracted using

The oil used as frothing agent in froth flotation process is

The addition of gold or silver to an alkaline sodium cyanide solution will cause the metals to react with the cyanide and dissolve them into the solution. The process is called

The most appropriate term for the blank in the image below is (The image below is the process of removing gangue from sulphide ores):

What is $\mathrm{P}$ in the following reaction?
${\mathrm{Al}}_2{\mathrm{O}}_3.2{\mathrm{H}}_2\mathrm{O}\underset{523 \mathrm{K}}{\overset{\mathrm{hot} \mathrm{conc}.\mathrm{NaOH}}{\to }}\mathrm{P}$

When $\mathrm{ZnS}$ and $\mathrm{PbS}$ minerals are present together, Then $\mathrm{NaCN}$ added to separate them in the froth floation process as a depressant, beacuse:-

Which of the following compounds are used in froth floatation process?

Which of the following ores are concentrated by froth flotation? 

The concentration of chromite $\left(\mathrm{FeO}.{\mathrm{Cr}}_2{\mathrm{O}}_3\right)$ is done by:

In froth floatation method depresants are used for-

Which of the following metal is obtained by leaching its ore with dilute cyanide solution:

The ores that are concentrated by froth-flotation method are:

If the ore contains magnetic impurities, then which method is used to separate them

To separate $\mathrm{ZnS}$ and $\mathrm{PbS}$, which depressant is used in froth — flotation process -

The impurities in the ore are collectively called-