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AP EAMCET Engineering 2011 Solved Paper
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© examsnet.com
Question : 69
Total: 160
Which one of the following oxides is reduced by water gas to obtain the metal during its extraction?
N
i
O
Z
n
O
W
O
3
F
e
2
O
3
Validate
Solution:
Nickel oxide is reduced by water gas to obtain the metal. Other oxides are reduced by other reducing agent.
Z
n
O
+
C
Δ
─
─
─
▶
Z
n
+
C
O
W
O
3
+
3
H
2
Δ
─
─
─
▶
W
+
3
H
2
O
F
e
2
O
3
+
3
C
O
Δ
─
─
─
▶
2
F
e
+
3
C
O
2
2
N
i
O
+
C
O
+
H
2
─
─
─
▶
2
N
i
+
C
O
2
+
H
2
O
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