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(C) The magnetic susceptibility $(\chi)$ of a substance is a measure of how easily it can be magnetized when placed in an external magnetic field.For

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small and positive

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(C) The magnetic susceptibility $(\chi)$ of a substance is a measure of how easily it can be magnetized when placed in an external magnetic field.For paramagnetic substances, the atoms or molecules possess a permanent magnetic dipole moment.When placed in an external magnetic field, these dipoles align weakly in the direction of the field.Consequently, paramagnetic substances exhibit a small and positive magnetic susceptibility ($0 Therefore, the correct option is $C$.

For a paramagnetic substance, the magnetic susceptibility is

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