Extraction of metals from the ores

Poling process is used for the extraction of metals like copper and tin.

In the leaching of silver, a complex is formed along with the metal precipitate.

Write the chemical equations involved in the extraction of silver by leaching(using sodium cyanide).

What is self reduction process? Name few metals which show the self-reduction process.

In the Down's process of extraction of sodium from molten sodium chloride, the reason for adding anhydride calcium chloride is:

The gas which gets collected at the anode in the electrolysis of molten $\mathrm{NaCl}$ is:

During the extraction of sodium from brine, water molecules undergo the following reaction:

$2{\mathrm{H}}_2\mathrm{O}+2{\mathrm{e}}^{-}\to {\mathrm{H}}_2\uparrow +2{\mathrm{OH}}^{-}$

On which electrode will this reaction take place?

Brine solution is used to obtain $\mathrm{NaOH}, {\mathrm{Cl}}_2$ and ${\mathrm{H}}_2$ by electrolyzing it. The composition of brine is:

The purpose of smelting an ore is to_____it.

The reducing agent in the thermite process is _____.

Froth floatation is a method used for the purification of _____ore.

The oil used in the froth floatation process is_____.

The impurity present in the ore is called as _____.

The_____method is suitable for the purification of low boiling metals.

Arranging metals in the decreasing order of their reactivity is called_____.

The _____method is suitable to enrich the sulphide ores.(Froth floatation/Leaching)

When do we use handpicking and washing methods in our daily life? Give examples. How do you correlate these examples with the enrichment of ore?

What is thermite process? Mention its applications in daily life.

What is activity series? How it helps in extraction of metals?

Draw the diagram showing i) Froth floatation ii) Magnetic separation.