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Mention two characteristics of a crystal...

Mention two characteristics of a crystalline solid which are the expressions of its internal regularity.

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(i) Sharp melting point. (ii) Definite heat of fusion.
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CHHAYA PUBLICATION-SOLID STATE-WARM UP EXERCISE
  1. A solid usually possesses high density and incompressibility. Explain ...

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  2. (a) What are crystalline solids? Give two examples. (b) Why is a sol...

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  3. Mention two characteristics of a crystalline solid which are the expre...

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  4. What are amorphous solids? Give two examples.

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  5. Why is an amorphous solid sometimes regarded as a supercooled liquid o...

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  6. A crystalline solid is anisotropic, whereas an amorphous solid is isot...

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  7. The coefficients of thermal expansion of a solid are found to be the s...

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  8. Both quartz and glass are made up of silica (SiO(2)). However, quartz ...

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  9. Why are the lower parts of the glass panes in the windows of very old ...

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  10. Classify the following substances as molecular, covalent, or ionic cry...

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  11. A very hard crystalline solid that melts at very high temperature, can...

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  12. Define the terms (a) crystal (b) crystal lattice ( c) lattice point.

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  13. What is unit cell of a crystal lattice? What parameters are used to ch...

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  14. Define (a) simple or primitive unit cell (b) body-centred unit cell ( ...

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  15. Which type of unit cells are called non-primitive unit cells?

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  16. How many types of two-dimensional lattices are possible?

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  17. How many types of crystal systems are there? Name them.

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  18. How many Bravais lattice are there? How many of these do belong to the...

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  19. Which crystal systems have the following axial characteristics? (i) a ...

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  20. Which crystal system has all possible types of unit cells, i.e., primi...

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