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प्रश्न
Which one of the following compounds is diamagnetic and colourless?
पर्याय
\[\ce{K2Cr2O7}\]
\[\ce{ZnSO4}\]
\[\ce{KMnO4}\]
\[\ce{Cr2(SO4)3}\]
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उत्तर
\[\ce{ZnSO4}\]
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संबंधित प्रश्न
Analysis shows that nickel oxide has the formula Ni0.98O1.00. What fractions of nickel exist as Ni2+ and Ni3+ ions?
Explain the following with suitable examples:
Ferrimagnetism
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The value of magnetic moment is zero in the case of antiferromagnetic substances because the domains:
(i) get oriented in the direction of the applied magnetic field.
(ii) get oriented opposite to the direction of the applied magnetic field.
(iii) are oppositely oriented with respect to each other without the application of magnetic field.
(iv) cancel out each other’s magnetic moment.
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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- Magnetic field lines due to a solenoid at its ends and outside cannot be completely straight and confined.
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- Magnetic field lines inside a bar magnet are not parallel.
- χ = -1 is the condition for a perfect diamagnetic material, where x is its magnetic susceptibility.
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[permeability of the free space μ0 = 4π × 10-7 Wb/A - m]
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Cu+2 salts are paramagnetic, while Cu+ salts are diamagnetic.
