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प्रश्न
Which of the following statements are correct?
(i) Ferrimagnetic substances lose ferrimagnetism on heating and become paramagnetic.
(ii) Ferrimagnetic substances do not lose ferrimagnetism on heating and remain ferrimagnetic.
(iii) Antiferromagnetic substances have domain structures similar to ferromagnetic substances and their magnetic moments are not cancelled by each other.
(iv) 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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उत्तर
(i) Ferrimagnetic substances lose ferrimagnetism on heating and become paramagnetic.
(iv) In ferromagnetic substances all the domains get oriented in the direction of magnetic field and remain as such even after removing magnetic field.
Explanation:
Ferrimagnetic substances lose ferrimagnetism on heating and become paramagnetic. In ferromagnetic 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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संबंधित प्रश्न
What is ferromagnetism?
Write the type of magnetism observed when the magnetic moments are aligned in parallel and anti-parallel directions in unequal numbers.
Give reasons:Ferrimagnetic substances show better magnetism than antiferromagnetic substances.
Give the properties of dia/para/ferromagnetic materials.
Substances that are strongly attracted by the applied magnetic field and can be permanently magnetized are ____________.
Fe3O4 is ____________.
Which type of substances would make better permanent magnets?
Fe3O4 (magnetite) is an example of ___________.
A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field becuase ______.
Which one of the following pairs has only paramagnetic species?
Which of the following is not a ferroelectric compound?
Some of the polar crystals when heated produces small electrical current. This phenomenon is called ______.
Magnetic materials used for making permanent magnets (P) and magnets in a transformer (T) have different properties of the following, which property best matches for the type of magnet required ?
The correct order of bond strength is ______.
Among the following ions, which one has the highest paramagnetism?
Match items of List - I with those of List - II:
| List - I | List - II | ||
| (Property) | (Example) | ||
| (A) | Diamagnetism | (i) | MnO |
| (B) | Ferrimagnetism | (ii) | O2 |
| (C) | Paramagnetism | (iii) | NaCl |
| (D) | Antiferromagnetism | (iv) | Fe3O4 |
Choose the most appropriate answer from the options given below:
The calculated spin only magnetic moment of Cr2+ ion is ______.
