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Physics
Iron is ferromagnetic
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Q. Iron is ferromagnetic
MGIMS Wardha
MGIMS Wardha 2009
A
at all temperatures
B
at NTP only
C
above 770?C
D
below 770?C
Solution:
Curie temperature of iron is $ 770{}^\circ C $ . So, below $ 770{}^\circ C $ , it is ferromagnetic and above $ 770{}^\circ C $ it is paramagnetic.