From the following flow-sheet for the extraction of pure metal, answer the questions at the end of it.
$S u l p h i d e \to A \to O x i d e \to B \to I m p u r e m e t a l \to C \to P u r e m e t a l$
Step A is:

Roasting

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Smelting

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Calcination

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Bessemerisation

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Solution

The correct option is C Roasting
Step A is roasting. It is the process of heating an ore alone (or) mixed with other substances in air below its melting point.
The roasting process removes volatile impurities from the ore. The roasting process is used for sulfide ores.
In the roasting process, air acts as an oxidant.

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Similar questions

Given below is the steps for extraction of Copper from its ore. Write the reactions involved.

(a) Roasting Copper (I) Sulphide.

(b) Reduction of Copper (I) oxide with Copper (I) sulphide

Q. (a) Write the steps involved in the extraction of pure metals in middle of the activity series from carbonate ores.

(b) How is copper extracted from its sulphide ore ? Explain the various steps supported by chemical equations. Draw labelled diagram for electrolytic refining of copper.

Question 62
(i) Given below are the steps for extraction of copper from its ore. Write the reaction involved.
(a) Roasting of copper (I) sulphide.
(b) Reduction of copper (I) oxide with copper (I) sulphide.
(c) Electrolytic refining.

(ii) Draw a neat and well-labelled diagram for electrolytic refining of copper.

Q. (a) Name two metals which are found in free state in nature.
(b) What chemical process is used for extracting a metal from its oxide ore? Name one metal which is extracted by this method.
(c) Describe the extraction of zinc metal from its sulphide ore as well as its carbonate ore. Write equations of all the reactions involved.

Question 60
Give the steps involved in the extraction of metals of low and medium reactivity from their respective sulphide ores.

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From the following flow-sheet for the extraction of pure metal, answer the questions at the end of it.Sulphide→A→Oxide→B→Impuremetal→C→Puremetal Step A is:

From the following flow-sheet for the extraction of pure metal, answer the questions at the end of it.
$S u l p h i d e \to A \to O x i d e \to B \to I m p u r e m e t a l \to C \to P u r e m e t a l$
Step A is: