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In a paramagnetic material

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Magnetic dipole moments of atom are held together in different domains in rigid parallelism. This is called exchange coupling.

Magnetic dipole moment of atom is zero

None of the above statements is correct.

Susceptibility is not held by temperature.

answer is D.

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Detailed Solution

Atoms of paramagnetic material have permanent dipole moments and these elementary dipole moments are oriented at random exchange coupling appears in ferromagnetic material decreases with temperature.

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