Which of the following ores undergo calcinati | vedclass

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(B) Calcination is a process of heating an ore in a limited supply of air or in the absence of air. It is typically used for carbonate and hydroxide o

Vedclass · Accepted Answer

$b$ and $c$

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(B) Calcination is a process of heating an ore in a limited supply of air or in the absence of air. It is typically used for carbonate and hydroxide ores.$(a)$ Argentite $(Ag_2S)$ is a sulfide ore,which undergoes roasting.$(b)$ Bauxite $(Al_2O_3 \cdot 2H_2O)$ is a hydrated oxide ore,which undergoes calcination to remove water.$(c)$ Malachite $(CuCO_3 \cdot Cu(OH)_2)$ is a carbonate/hydroxide ore,which undergoes calcination.$(d)$ Copper pyrite $(CuFeS_2)$ is a sulfide ore,which undergoes roasting.Therefore,both bauxite $(b)$ and malachite $(c)$ undergo calcination.

Which of the following ores undergo calcination during the extraction process?

Similar Questions

Roasting is generally done in case of the following:

In order to bring initial chemical change in the ore,the process of heating of ore below its melting point is known as

Heating of pyrites in air for oxidation of sulphur is called

Given below are two statements:
Statement-$I$ : In the metallurgy process,sulphide ore is converted to oxide before reduction.
Statement-$II$ : Oxide ores in general are easier to reduce.
In the light of the above statements,choose the most appropriate answer from the options given below :

The mixture obtained from the roasting of copper pyrites is ......... .

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