Concentration of Ores

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

In case of an ore containing $\mathrm{ZnS}$ and $\mathrm{PbS}$, the depressant used is selectively prevents $\mathrm{ZnS}$ from coming to the froth but allows $\mathrm{PbS}$ to come with the froth. The depressant used is

In the froth floatation process the collectors such as pine oils and xanthates etc. enhance

Concentration of copper glance is done by

The process of leaching cannot be done for the extraction of

Which of the following is leached with $\mathrm{NaCN}?$

Which of the following is commonly used to produce foam in froth floatation process?

Explain briefly about pulverization.

Sulphide ores are generally concentrated by 

Leaching method is used to concentrate the ores of-

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

The oil used as frothing agent in froth flotation process is

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 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: