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JEEMAIN and NEET
>>
Chemistry
>>
General Principals and Processes of Isolation of Metals
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Q)
Magnetic oxide of iron is
(
a
)
F
e
2
O
3
(
b
)
F
e
O
(
c
)
F
e
3
O
4
(
d
)
F
e
4
O
6
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