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A ferromagnetic substance becomes a perm...

A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field because:

A

all the domains get oriented in the direction of magnetic field

B

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

C

domains get oriented randomly

D

domains are not affected by magnetic field.

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The correct Answer is:
A
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DINESH PUBLICATION-SOLID STATE-MULTIPLE CHOCIE QUESTION (TYPE-I)
  1. Which of the following statements is not ture ?

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  2. which of the following is not true about the ionic solids ?

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  3. A ferromagnetic substance becomes a permanent magnet when it is placed...

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  4. the correct order of the packing effeciency in different types o...

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  5. which of the follwing defects is also known as dislocation defect ...

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  6. in the cubic packing , the unit cell has ………. .

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  7. the edge length of the unit cells in terms of the radius of spher...

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  8. which of the following represents correct order of conductivity ...

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  9. Which of the following is not true about the voids formed in 3 dimensi...

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  10. the value of magnetic moment is zero in the case of antiferromag...

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  11. Which of the following statements are not true ?

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  12. Which of the following statements are true about metals ?

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  13. under the influence of electric field , which of the following st...

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  14. Which of the following statements are ture about semi-conductors ?

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  15. An excess of potassium ions makes KCL crystals appear violet or l...

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  16. the number of tetrahedral voids per unit cell in NaCl crystal is ...

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  17. Amorphous solids can also be callled ………….. .

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  18. A perfect crystal of silicon (fig) is doped with some elements a...

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  19. Which of the following statements are correct ?

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  20. Which of the following features are not shown by quartz glass ?

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