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Standard X
Chemistry
Extraction of Copper
After partial...
Question
After partial roasting , the sulphide of copper is reduced by
A
Reduction by carbon
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B
Electrolysis
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C
Self - reduction
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D
Cyanide process
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Solution
The correct option is
C
Self - reduction
A
n
s
−
Self reduction :- Reduction of oxide ore of a metal by its own sulphide
2
C
u
2
O
+
C
u
2
S
→
6
C
u
+
S
O
2
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Similar questions
Q.
Reduction to free metal: some of the methods commonly used to get free metal from the concentrates ore are below.
Smelting: The process of extracting a metal in the state of fusions is called smelting. In this process the ore is mixed with carbon and heated in suitable furnace
Electrolytic reduction process: This process is used in the extraction of the alkali and alkaline earth metals, zinc and aluminium.
Self reduction process: The sulphide ores of less electropositive metals like Hg, Pb, Cu etc., are heated in air so asto convert part of the ore into oxide or sulphate which then reacts with the remaining sulphide ore to give the metal.
After partial roasting, the sulphide of copper is reduced by :
Q.
Why is partial roasting of sulphide ore done in metallurgy of copper?
Q.
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.
Sulphide ores partially oxidized during roasting in the extraction of copper are :
Q.
Another chemestry question
Given below are the steps for extraction of copper from its ore. Write the reaction involved.
A roasting of copper (1) sulphide
B reduction of copper(1) oxide with copper (1) sulphide
C electrolytic refining
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