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Classify the following as amorphour or c...

Classify the following as amorphour or crystalline solids: Polyurethane, nephthalene, benzoic, acid, teflon, potassium nitrate, cellphane, polyviny chloride, fibre glass, copper.

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ASSAM ACADEMIC CENTRE-Solid State -Example
  1. Why are solids rigid?

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  2. Why do solids have a definite volume?

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  3. Classify the following as amorphour or crystalline solids: Polyurethan...

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  4. Why is glass considered a super cooled liquid?

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  5. Refractive index of a solid is observed to have the same value along a...

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  6. Classify the following solids in different categories based on the nat...

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  7. Solid A is a very hard electrical insulator in solid as well as in mol...

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  8. Ionic solids conduct electricity in molten state but not in solid stat...

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  9. What type of solids are electrical conductors, malleable and ductile?

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  10. Give the significance of a 'lattice point'.

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  11. Name the parameters that characterize a unit cell.

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  12. Distinguish between Hexagonal and monoclinic unit cells.

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  13. Distinguish between Face-centred and end-centred unit cells.

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  14. Explain how much portion of an atom located at corner.

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  15. Explain how much portion of an atom located at body-centre of a cubic ...

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  16. What is the two dimensional coordination number of a molecule in squar...

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

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  18. A compound is formed by two elements M and N. The elements N forms ccp...

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  19. Which of the following lattices has the highest packing efficiency -si...

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  20. An element with molar mass 2.7xx10^-2 kg mol^-1 forms a cubic unit cel...

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