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Define the term 'amorphous'. Give a few ...

Define the term 'amorphous'. Give a few examples of amorphous solids.

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A solid is said to be amorphous if the constituent particles are not arranged in any regular fashion. They may have short range order. For example: glass, plastics, amorphous silica.
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MBD -HARYANA BOARD-SOLID STATE-VERY SHORT ANSWER TYPE QUESTIONS
  1. Why are solids rigid ?

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  2. Define the term 'amorphous'. Give a few examples of amorphous solids.

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  3. What is the significance of lattice point ?

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  4. Why is glass considered as a supercooled liquid ?

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  5. What makes a glass different from a solid such as quartz ? Under what ...

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  6. Define unit cell.

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  7. What are F-centres ?

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  8. What is the effect of presence of Schottky defect on the density of a ...

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  9. What is electrical conductivity in metals due to ?

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  10. Why is Frenkel defect not found in pure alkali metal halides?

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  11. What is the radius ratio for an ion to occupy octahedral site ?

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  12. What are 12—16 and 13—15 compounds ?

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  13. Explain the nature of crystal defect produced when sodium chloride cry...

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  14. Name any ionic solid in which both Frenkel and Schottky defects occur.

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  15. In a compound 'A' atoms are present at the corner and 'B' atoms are at...

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  16. What type of defect is shown by ZnS?

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  17. Give one example of an oxide which is ferromagnetic. Give its one impo...

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  18. In a close packed arrangement of N spheres, how many i) tetrahedral an...

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  19. The radii of P^(+) and Q^(-) are 0.95 overset(*)A and 1.81 overset(*)A...

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  20. What are the ferromagnetic substances ?

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