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Question
Chemistry
Which of the reaction is suitable for concentrating ore by leaching process ?
Q. Which of the reaction is suitable for concentrating ore by leaching process ?
169
121
JEE Main
JEE Main 2022
General Principles and Processes of Isolation of Elements
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A
2
C
u
2
S
+
3
O
2
→
2
C
u
2
O
+
2
S
O
2
B
F
e
3
O
4
+
CO
→
3
F
e
O
+
C
O
2
C
A
l
2
O
3
+
2
N
a
O
H
+
3
H
2
O
→
2
N
a
[
A
l
(
O
H
)
4
]
D
A
l
2
O
3
+
6
M
g
→
6
M
g
O
+
4
A
l
Solution:
A
l
2
O
3
+
2
N
a
O
H
+
3
H
2
O
→
2
N
a
,
[
A
l
(
O
H
)
4
]
Leaching.