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What is stoichiometric defect? What kind...

What is stoichiometric defect? What kind of defects are Schottky and Frenkel defects? Which one of these two defects is associated with decrease in density of the crystal, and which one is associated with no change in density? Give reasons.

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CHHAYA PUBLICATION-SOLID STATE-EXERCISE
  1. Why does the electrical conductivity of germanium crystal increase whe...

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  2. Write the differences between crystalline and amorphous solids.

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  3. On the basis of the nature of constituent particles, how are crystalli...

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  4. Between square and hexagonal close packing in two dimensions, which on...

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  5. Define: (i) Cubic close-packed structure (ii) Hexagonal close-packed s...

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  6. Show that 26% of the total volume of a face-centred cubic unit cell re...

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  7. Show that the number of octahedral voids in a ccp or an hcp structure ...

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  8. Explain how the electrical neutrality of an ionic crystal is maintaine...

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  9. Table salt (NaCl), which is essentially white in colour, is found yell...

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  10. ZnO is white in colour, but when it is heated its colour turns yellow....

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  11. Why is ferrous oxide hard to be prepared with ideal stoichiometric com...

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  12. Calculate the number of particles in unit cells of ccp and hcp structu...

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  13. Show with a diagram that a unit cell in a ccp structure has a total of...

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  14. The actual formula derived from the analysis of a sample of ferrous ox...

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  15. Show that if the radius of tetrahedral holes in a ccp or a hcp structu...

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  16. Show that if the radius of octahedral holes be r in a ccp or hcp struc...

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  17. Calculate the packing fraction in a hexagonal close-packed structure w...

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  18. With the help of band theory explain (i) inability of an insulator to ...

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  19. What is an impurity defect? What kind of impurity defect is generated ...

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  20. What is stoichiometric defect? What kind of defects are Schottky and F...

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