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Why is an amorphous solid sometimes rega...

Why is an amorphous solid sometimes regarded as a supercooled liquid of high viscosity?

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CHHAYA PUBLICATION-SOLID STATE-WARM UP EXERCISE
  1. Mention two characteristics of a crystalline solid which are the expre...

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  2. What are amorphous solids? Give two examples.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  19. Name a compound and an element whose crystals consist of cubic unit ce...

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  20. Name a compound and an element whose crystals consist of hexagonal uni...

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