Conversion of Ores into Oxide

Extraction of zinc from zinc blende is achieved by

$2\mathrm{PbS}+3{\mathrm{O}}_2 \to 2\mathrm{PbO}+2{\mathrm{SO}}_2$
The above process is called

Concentrated ore, calamine is heated to get metal oxide and the volatile impurities escapes away. This process is called

Roasting is the process of heating the ore in

Roasting of sulphide ore is generally performed in

Sulphide ore is converted to oxide form by using the process

Carbon dioxide is released on heating lime stone ore, in metallurgy. This is called _____

Sulphide ore on roasting gives a gas $\mathrm{X}$. $\mathrm{X}$ reacts with ${\mathrm{Cl}}_2$ in the presence of activated charcoal to give $\mathrm{Y}$. $\mathrm{Y}$ is :

Which of the following equations represents calcination ?

Which of the following reaction does not occur during roasting?

Roasting of sulphides gives the gas $\mathrm{X}$ as a by-product. This is a colourless gas with choking smell of burnt sulphur and causes great damage to respiratory organs as a result of acid rain. Its aqueous solution is acidic, acts as a reducing agent and its acid has never been isolated. The gas $\mathrm{X}$ is

Heating of iron pyrites in air to remove sulphur is called 

Partial roasting of galena gives:

$\mathrm{PbS}$ is roasted to give

Choose the correct option using the code regarding roasting process.
(I) It is the process of heating the ore in air in a reverberatory furnace to obtain the oxide.
(II) It is an exothermic process.
(III) It is used for the concentration of sulphide ore.
(IV) It removes easily oxidisable volatile impurities present in the concentrated ore.
 

Which of the following reaction is not observed in Bessemer converter?

In the following sequence, find out the $\mathrm{A}, \mathrm{B}$, and $\mathrm{C}$ from the following list. 

${\mathrm{ZnCO}}_{3\left(\mathrm{s}\right)}\stackrel{\left(\mathrm{A}\right)}{⟶}{\mathrm{ZnO}}_{\left(\mathrm{s}\right)}\stackrel{\left(\mathrm{B}\right)}{⟶} \mathrm{Impure} \mathrm{Zn}\stackrel{\left(\mathrm{C}\right)}{\to }\mathrm{Pure} \mathrm{Zn}$

$\mathrm{Zn}$ can be extracted from zinc blende by using:

The processes involved in the extraction of zinc from zinc blende are:

The process of extraction of metal from carbonate ore involves _______ as a major step.