318864
Which of the following statements is correct?
1 Ferrimagnetic substances lose ferrimagnetism on heating and become diamagnetic.
2 Ferrimagnetic substances do not lose ferrimagnetism on heating and remain ferrimagnetic
3 Anti-ferromagnetic substances have domain structures similar to ferromagnetic substances and their magnetic moment are not cancelled by each other.
4 In ferromagnetic substances all the domains get oriented in the direction of magnetic field and remain as such even after removing magnetic field.
Explanation:
It's a characteristic of ferromagnetic substance.
CHXII01:THE SOLID STATE
318865
Diamagnetic substances are I. Weakly repelled by magnetic field. II. Weakly magnetised in a magnetic field in opposite direction. III. Those which have no unpaired electron. IV. Pairing of electrons cancels their magnetic moment. Which of the above statement(s) is correct?
1 Only I, II
2 Only II, III
3 Only III, IV
4 I, II, III, IV
Explanation:
Diamagnetic substances are weakly repelled by magnetic field. \(\mathrm{H}_{2} \mathrm{O}, \mathrm{NaCl}\) and \(\mathrm{C}_{6} \mathrm{H}_{6}\) are some of diamagnetic substances. They are weakly magnetised in a magnetic field in opposite direction. These have no unpaired electrons.Pairing of electrons cancels their magnetic moment and they lose their magnetic character.
CHXII01:THE SOLID STATE
318866
Among the following species, the one which become paramagnetic on heating at \(850 \mathrm{~K}\) is
1 \(\mathrm{Fe}_{3} \mathrm{O}_{4}\)
2 \(\mathrm{MnO}\)
3 \(\mathrm{ZnFe}_{2} \mathrm{O}_{4}\)
4 Both (1) and (3)
Explanation:
All magnetically ordered solids, i.e. ferromagnetic; antiferromagnetic; ferrimagnetic changes to paramagnetic state at high temperature because of the randomisation of spins. Ferrimagnetic species such as \(\mathrm{Fe}_{3} \mathrm{O}_{4}\) (magnetite) and ferrites, i.e. \(\mathrm{MgFe}_{2} \mathrm{O}_{4}\) and \(\mathrm{ZnFe}_{2} \mathrm{O}_{4}\) loses ferrimagnetism on heating and transforms to paramagnetic species.
318864
Which of the following statements is correct?
1 Ferrimagnetic substances lose ferrimagnetism on heating and become diamagnetic.
2 Ferrimagnetic substances do not lose ferrimagnetism on heating and remain ferrimagnetic
3 Anti-ferromagnetic substances have domain structures similar to ferromagnetic substances and their magnetic moment are not cancelled by each other.
4 In ferromagnetic substances all the domains get oriented in the direction of magnetic field and remain as such even after removing magnetic field.
Explanation:
It's a characteristic of ferromagnetic substance.
CHXII01:THE SOLID STATE
318865
Diamagnetic substances are I. Weakly repelled by magnetic field. II. Weakly magnetised in a magnetic field in opposite direction. III. Those which have no unpaired electron. IV. Pairing of electrons cancels their magnetic moment. Which of the above statement(s) is correct?
1 Only I, II
2 Only II, III
3 Only III, IV
4 I, II, III, IV
Explanation:
Diamagnetic substances are weakly repelled by magnetic field. \(\mathrm{H}_{2} \mathrm{O}, \mathrm{NaCl}\) and \(\mathrm{C}_{6} \mathrm{H}_{6}\) are some of diamagnetic substances. They are weakly magnetised in a magnetic field in opposite direction. These have no unpaired electrons.Pairing of electrons cancels their magnetic moment and they lose their magnetic character.
CHXII01:THE SOLID STATE
318866
Among the following species, the one which become paramagnetic on heating at \(850 \mathrm{~K}\) is
1 \(\mathrm{Fe}_{3} \mathrm{O}_{4}\)
2 \(\mathrm{MnO}\)
3 \(\mathrm{ZnFe}_{2} \mathrm{O}_{4}\)
4 Both (1) and (3)
Explanation:
All magnetically ordered solids, i.e. ferromagnetic; antiferromagnetic; ferrimagnetic changes to paramagnetic state at high temperature because of the randomisation of spins. Ferrimagnetic species such as \(\mathrm{Fe}_{3} \mathrm{O}_{4}\) (magnetite) and ferrites, i.e. \(\mathrm{MgFe}_{2} \mathrm{O}_{4}\) and \(\mathrm{ZnFe}_{2} \mathrm{O}_{4}\) loses ferrimagnetism on heating and transforms to paramagnetic species.
318864
Which of the following statements is correct?
1 Ferrimagnetic substances lose ferrimagnetism on heating and become diamagnetic.
2 Ferrimagnetic substances do not lose ferrimagnetism on heating and remain ferrimagnetic
3 Anti-ferromagnetic substances have domain structures similar to ferromagnetic substances and their magnetic moment are not cancelled by each other.
4 In ferromagnetic substances all the domains get oriented in the direction of magnetic field and remain as such even after removing magnetic field.
Explanation:
It's a characteristic of ferromagnetic substance.
CHXII01:THE SOLID STATE
318865
Diamagnetic substances are I. Weakly repelled by magnetic field. II. Weakly magnetised in a magnetic field in opposite direction. III. Those which have no unpaired electron. IV. Pairing of electrons cancels their magnetic moment. Which of the above statement(s) is correct?
1 Only I, II
2 Only II, III
3 Only III, IV
4 I, II, III, IV
Explanation:
Diamagnetic substances are weakly repelled by magnetic field. \(\mathrm{H}_{2} \mathrm{O}, \mathrm{NaCl}\) and \(\mathrm{C}_{6} \mathrm{H}_{6}\) are some of diamagnetic substances. They are weakly magnetised in a magnetic field in opposite direction. These have no unpaired electrons.Pairing of electrons cancels their magnetic moment and they lose their magnetic character.
CHXII01:THE SOLID STATE
318866
Among the following species, the one which become paramagnetic on heating at \(850 \mathrm{~K}\) is
1 \(\mathrm{Fe}_{3} \mathrm{O}_{4}\)
2 \(\mathrm{MnO}\)
3 \(\mathrm{ZnFe}_{2} \mathrm{O}_{4}\)
4 Both (1) and (3)
Explanation:
All magnetically ordered solids, i.e. ferromagnetic; antiferromagnetic; ferrimagnetic changes to paramagnetic state at high temperature because of the randomisation of spins. Ferrimagnetic species such as \(\mathrm{Fe}_{3} \mathrm{O}_{4}\) (magnetite) and ferrites, i.e. \(\mathrm{MgFe}_{2} \mathrm{O}_{4}\) and \(\mathrm{ZnFe}_{2} \mathrm{O}_{4}\) loses ferrimagnetism on heating and transforms to paramagnetic species.
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CHXII01:THE SOLID STATE
318863
MnO exhibits:
1 Ferrimagnetism
2 Antiferromagnetism
3 Ferromagnetism
4 Paramagnetism
Explanation:
MnO exhibits antiferro magnetism.
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CHXII01:THE SOLID STATE
318864
Which of the following statements is correct?
1 Ferrimagnetic substances lose ferrimagnetism on heating and become diamagnetic.
2 Ferrimagnetic substances do not lose ferrimagnetism on heating and remain ferrimagnetic
3 Anti-ferromagnetic substances have domain structures similar to ferromagnetic substances and their magnetic moment are not cancelled by each other.
4 In ferromagnetic substances all the domains get oriented in the direction of magnetic field and remain as such even after removing magnetic field.
Explanation:
It's a characteristic of ferromagnetic substance.
CHXII01:THE SOLID STATE
318865
Diamagnetic substances are I. Weakly repelled by magnetic field. II. Weakly magnetised in a magnetic field in opposite direction. III. Those which have no unpaired electron. IV. Pairing of electrons cancels their magnetic moment. Which of the above statement(s) is correct?
1 Only I, II
2 Only II, III
3 Only III, IV
4 I, II, III, IV
Explanation:
Diamagnetic substances are weakly repelled by magnetic field. \(\mathrm{H}_{2} \mathrm{O}, \mathrm{NaCl}\) and \(\mathrm{C}_{6} \mathrm{H}_{6}\) are some of diamagnetic substances. They are weakly magnetised in a magnetic field in opposite direction. These have no unpaired electrons.Pairing of electrons cancels their magnetic moment and they lose their magnetic character.
CHXII01:THE SOLID STATE
318866
Among the following species, the one which become paramagnetic on heating at \(850 \mathrm{~K}\) is
1 \(\mathrm{Fe}_{3} \mathrm{O}_{4}\)
2 \(\mathrm{MnO}\)
3 \(\mathrm{ZnFe}_{2} \mathrm{O}_{4}\)
4 Both (1) and (3)
Explanation:
All magnetically ordered solids, i.e. ferromagnetic; antiferromagnetic; ferrimagnetic changes to paramagnetic state at high temperature because of the randomisation of spins. Ferrimagnetic species such as \(\mathrm{Fe}_{3} \mathrm{O}_{4}\) (magnetite) and ferrites, i.e. \(\mathrm{MgFe}_{2} \mathrm{O}_{4}\) and \(\mathrm{ZnFe}_{2} \mathrm{O}_{4}\) loses ferrimagnetism on heating and transforms to paramagnetic species.
