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The Solid State — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryThe Solid State1 Mark
MCQ
Which of the following statements is not true?
  • A
    Paramagnetic substances are weakly attracted by magnetic field.
  • ✓
    Ferromagnetic substances cannot be magnetised permanently.
  • C
    The domains in antiferromagnetic substances are oppositely oriented with respect to each other.
  • D
    Pairing of electrons cancels their magnetic moment in the diamagnetic substances.
✓

Answer

Correct option: B.
Ferromagnetic substances cannot be magnetised permanently.
Ferromagnetic species are strongly attracted in the magnetic field and can be permanently magnetised. Hence, choice $(b)$ is the correct answer while other three choices are correct.

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