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What types of allignments in crystals ma...

What types of allignments in crystals make them ferromagnetic ?

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Ferromagnetism in crystals arises due to the allignment of the unpaired electrons pointing in the same direction under the influence fo the applied magnetic field
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DINESH PUBLICATION-SOLID STATE-QUESTION FROM BOARD EXAMINATION
  1. What type of substances exhibit antiferromagnetism ?

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  2. Why Frenkel defects are not found in pure alkali metal halides?

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  3. What types of allignments in crystals make them ferromagnetic ?

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  4. To get a n- type semiconductor from silicon , it should be doped...

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  5. Which point defect in crystals does not alter the density of the relev...

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  6. How do metallic and ionic substances differ in conducting electricity ...

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  7. What type of interactions hold together the molecules in a polar cryst...

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  8. Write a distinguishing feature of metallic solids.

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  9. What type of semiconductor results when highly purified silicon is dop...

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  10. Crystalline solids are anisotropc in nature. What does this statement ...

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  11. Distinguish between intrinsic and extrinsic semi-conductors on the bas...

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  12. What are semi-conductors ? Describe the two main types of semi- conduc...

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  13. KF has ccp structure. Calculate the radius of the unit cell if the edg...

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  14. Give reason : (a) Why is Frenkel defect found in AgCl ? (b) What i...

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  15. Classify each of the following as being n-type semi-conductor. Give re...

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  16. How many atoms constitute one unit cell of a face-centred cubic crysta...

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  17. What type of stoichiometric defect is shown by AgCl ?

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  18. What type of substances would make better permanent magnets, ferromagn...

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  19. What type of solids are electrical conductors, malleable or ductile?

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  20. Why is glass considered a supercooled liquid?

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