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What type of alignments in crystal make ...

What type of alignments in crystal make them ferromagnetic?

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ASSAM ACADEMIC CENTRE-Solid State -Example
  1. Although pure silicon is an insulator, then how does it behave as a se...

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  2. Define forbidden zone in the insulator.

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  3. What type of alignments in crystal make them ferromagnetic?

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  4. Which point defect in crystal does not alter the density of a solid.

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  5. Which point defect lowers the density of a crystal?

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  6. Write feature which will distinguish a metallic solid from an ionic so...

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  7. What is photovoltaic cell?

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  8. What kind of attractive forces are present in the molecular crystal so...

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  9. What is a unit cell?

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  10. Which point defects in the crystal unit increases the density of solid...

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  11. How many effective Na^(+) are located at the edge centre of a unit cel...

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  12. Define void.

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  13. What is the number of tetrahedral voids in a unit cell of a cubic clos...

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  14. Name one solid in which both Frenkel and Schottky defects occur?

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  15. Write the difference between the following: Octahedral void and tetr...

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  16. Explain the following Ferrimagnetism.

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  17. Explain the following n-type semiconductor.

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  18. A compound forms hexagonal close packed (hcp) structure. What is the t...

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  19. What is semiconductor? Mention the two main types of semiconductor.

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  20. Atoms of element X form hcp lattice and those of element Y form occupy...

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