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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field becuase ______.

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प्रश्न

A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field becuase ______.

पर्याय

  • all the domains get oriented in the direction of magnetic field.

  • all the domains get oriented in the direction opposite to the direction of magnetic field.

  • domains get oriented randomly.

  • domains are not affected by magnetic field.

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रिकाम्या जागा भरा
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उत्तर

A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field becuase all the domains get oriented in the direction of magnetic field.

Explanation:

Ferromagnetic solids can be permanently magnetised and then all the domains get oriented in the direction of applied magnetic field.

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पाठ 1: Solid States - Exercises [पृष्ठ ६]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
पाठ 1 Solid States
Exercises | Q I. 32. | पृष्ठ ६

संबंधित प्रश्‍न

What is ferromagnetism?


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Ferromagnetism


Write the type of magnetism observed when the magnetic moments are oppositely aligned and cancel out each other.


The complexion [Ni(CN)4]2- is:


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(i) Transition elements form coloured compounds. 
(ii) Interhalogen compounds are more reactive than their constituent elements.
(iii) Cu+ is diamagnetic but Cu2+ is paramagnetic. (Z = 29)


Pyrolusite ore is _______.


Give reason for the following :  
Sulphur in vapour state shows paramagnetic behaviour. 


Compare dia, para and ferromagnetism.


Compare the properties of soft and hard ferromagnetic materials.


Substances which are weakly repelled in magnetic field are known as ____________.


Substances that are strongly attracted by the applied magnetic field and can be permanently magnetized are ____________.


When heated to high temperature, ferromagnetic substance changes to ____________.


Fe3Ois ____________.


Fe3O4 (magnetite) is an example of ___________.


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.


Given below are two statements labelled as Assertion (A) and Reason (R).

Assertion: Magnetic moment values of actinides are lesser than the theoretically predicted values.

Reason: Actinide elements are strongly paramagnetic.

Select the most appropriate answer from the options given below:


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 ?


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[permeability of the free space μ0 = 4π × 10-7 Wb/A - m]


Give a reason for the following:

Cu+2 salts are paramagnetic, while Cu+ salts are diamagnetic.


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