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JEEMAIN and NEET
>>
Chemistry
>>
General Principals and Processes of Isolation of Metals
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Q)
By which of the following reactions is copper obtained?
(
a
)
C
u
2
S
+
F
e
o
⟶
2
C
u
+
F
e
S
2
(
b
)
C
u
2
S
+
F
e
⟶
F
e
2
+
C
u
(
c
)
C
u
2
S
+
F
e
o
⟶
2
C
u
+
F
e
O
(
d
)
C
u
2
S
+
2
C
u
2
O
⟶
6
C
u
+
S
o
2
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