Class 12 Exam > Class 12 Questions > Which among the following statements is corre...
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Which among the following statements is correct?
- a)On heating, ferrimagnetic substanceslose ferrimagnetism
- b)Paramagnetic substances behave like an insulator
- c)Cobalt is an Antiferromagnetic substance
- d)NaCl is a paramagnetic substance
Correct answer is option 'A'. Can you explain this answer?
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Which among the following statements is correct?a)On heating, ferrimag...
On heating, ferrimagnetic substances become paramagnetic and hence, lose their ferromagnetism. NaCl is diamagnetic in nature. Cobalt is a ferromagnetic substance.
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Which among the following statements is correct?a)On heating, ferrimag...
Explanation:
Heating and Ferrimagnetic Substances:
- When ferrimagnetic substances are heated, they tend to lose their ferrimagnetism.
- This is because heating disrupts the alignment of magnetic moments in the material, causing a decrease in the net magnetic moment.
- As a result, the material becomes less magnetized and may even lose its magnetic properties entirely.
Paramagnetic Substances and Insulator Behavior:
- Paramagnetic substances do not behave like insulators. In fact, they exhibit weak attraction to magnetic fields due to the presence of unpaired electrons.
- Unlike insulators, paramagnetic materials are not good at resisting the flow of electric current and can be easily magnetized in the presence of an external magnetic field.
Cobalt as an Antiferromagnetic Substance:
- Cobalt is not an antiferromagnetic substance. It is actually a ferromagnetic material, meaning it has a spontaneous magnetic moment that aligns with an external magnetic field.
- In antiferromagnetic materials, neighboring magnetic moments align in an antiparallel manner, resulting in no net magnetic moment at the macroscopic level.
NaCl as a Paramagnetic Substance:
- NaCl (sodium chloride) is not a paramagnetic substance. It is a diamagnetic material, which means it has no unpaired electrons and is weakly repelled by magnetic fields.
- Paramagnetic substances, on the other hand, are attracted to magnetic fields due to the presence of unpaired electrons that can align with the external field.
Therefore, the correct statement is that on heating, ferrimagnetic substances lose ferrimagnetism.
Heating and Ferrimagnetic Substances:
- When ferrimagnetic substances are heated, they tend to lose their ferrimagnetism.
- This is because heating disrupts the alignment of magnetic moments in the material, causing a decrease in the net magnetic moment.
- As a result, the material becomes less magnetized and may even lose its magnetic properties entirely.
Paramagnetic Substances and Insulator Behavior:
- Paramagnetic substances do not behave like insulators. In fact, they exhibit weak attraction to magnetic fields due to the presence of unpaired electrons.
- Unlike insulators, paramagnetic materials are not good at resisting the flow of electric current and can be easily magnetized in the presence of an external magnetic field.
Cobalt as an Antiferromagnetic Substance:
- Cobalt is not an antiferromagnetic substance. It is actually a ferromagnetic material, meaning it has a spontaneous magnetic moment that aligns with an external magnetic field.
- In antiferromagnetic materials, neighboring magnetic moments align in an antiparallel manner, resulting in no net magnetic moment at the macroscopic level.
NaCl as a Paramagnetic Substance:
- NaCl (sodium chloride) is not a paramagnetic substance. It is a diamagnetic material, which means it has no unpaired electrons and is weakly repelled by magnetic fields.
- Paramagnetic substances, on the other hand, are attracted to magnetic fields due to the presence of unpaired electrons that can align with the external field.
Therefore, the correct statement is that on heating, ferrimagnetic substances lose ferrimagnetism.
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Which among the following statements is correct?a)On heating, ferrimagnetic substanceslose ferrimagnetismb)Paramagnetic substances behave like an insulatorc)Cobalt is an Antiferromagnetic substanced)NaCl is a paramagnetic substanceCorrect answer is option 'A'. Can you explain this answer?
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