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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
What type of substances would make better permanent magnets, ferromagnetic or ferrimagnetic. Justify your answer.
Explain the following with suitable examples:
Paramagnetism
Explain the following with suitable examples:
Antiferromagnetism
Give reason for the following :
Sulphur in vapour state shows paramagnetic behaviour.
What happens to the domains in a ferromagnetic material in the presence of external magnetic field?
Compare the properties of soft and hard ferromagnetic materials.
Substances which are weakly repelled in magnetic field are known as ____________.
Assertion: On heating ferromagnetic or ferrimagnetic substances, they become paramagnetic.
Reason: The electrons change their spin on heating.
A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field becuase ______.
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.
