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Classify the following as amorphous or c...

Classify the following as amorphous or crystalline solids: polyurethane, naphthalene, benzoic, acid, teflon, potassium nitrate, cellophane, polyvinyl chloride, fibre glass, copper.

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Amorphous solids : Polyurethane, cellophane, polyvinyl chloride, fibre glass, teflon. Crystalline solids : Napthalene, benzonic acid, potassium nitrate, C0pper.
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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 characterise a unit cell.

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  12. Distinguish between : Hexagonal and monoclinic unit cells

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  13. Explain how much portion of an atom located at corner and body centre ...

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  14. What is the 2 D coordination number of a molecule in square close pack...

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  15. A compound forms hcp structure, what is the total number of voids in 0...

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  16. A compound is formed by two element M and N . The element N forms ccp ...

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  17. Which of the following lattices has the highest packing efficiency i...

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  18. An element with molar mass 2.7xx10^(-2) kg mol^(-1) forms a cubic unit...

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  19. What type of defect can arise when a solid is heated? Which physical p...

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