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Which of the following statements are correct?

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a
Ferrimagnetic substances lose ferrimagnetism on heating and become paramagnetic
b
Fenimagnetic substances do not lose ferrimagnetism on heating and remain ferrimagnetic
c
Antiferromagnetic substances have domain structures similar to ferromagnetic substances and their magnetic moments are not cancelled by each other
d
In ferromagnetic substances, all the domains get oriented in the direction of magnetic field and remain as such even after removing magnetic field

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detailed solution

Correct option is A

Ferrimagnetic substances lose ferrimagnetism on heating and become paramagnetic. In ferrimagnetic substance domains are aligned in parallel and antiparallel direction in unequal numbers. In ferromagnetic substances, all the domains get oriented in the direction of magnetic field and remain as such even after removing magnetic field.

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