Reduction of Metal Oxides to Metals

In  the process of extraction of gold,

Roasted gold ore

$\left[X\right]+Zn\stackrel{}{\to }\left[Y\right]+Au$

Copper can be extracted from

Copper can be extracted from

In the thermite process … is used as a reducing agent.

The reducing agent used for the extraction of $\mathrm{Mo}$ and $\mathrm{W}$ is _____.

(A) ${\mathrm{H}}_2$
(B) $\mathrm{CO}$
(C) ${\mathrm{H}}_2\mathrm{S}$

Enter your correct answer as A, B or C.

Discuss the reduction of metal by hydrogen.

The element which is most difficult to be extracted from it's oxide using coke as a reducing agent is:

Which of the following can be removed by the addition of silica in the extraction of copper by smelting?

In the extraction of copper from its sulphide ore, metal is finally obtained by the oxidation of cuprous sulphide with:

The element which is most difficult to be extracted from it's oxide using coke as a reducing agent is:

The metal used in the thermite process of reducing metal oxides is

In metallurgical process, aluminium acts as a _____ agent.(reducing/oxidising)

During the extraction of haematite, limestone is added which acts as

Explain hydrometallurgy.

Define pyrometallurgy.

The extraction of gold involves leaching the metal with ${\mathrm{CN}}^{-}$, the metal is later recovered by displacement method using a zinc metal. In this reaction, zinc acts as a 

Explain the extraction of chlorine from brine solution.

_____ involves the use of aqueous solutions for the recovery of metals from ores, concentrates, and recycled or residual materials.(Hydrometallurgy/Pyrometallurgy)

Describe pyrometallurgy.