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Classify the following as amorphous or c...

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

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amorphos : polyurethane, teflon, cellophane, polyvinyl chloride, crystalline : naphthalene, benzoic acid, potassium nitrate, fibre glass, copper
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DINESH PUBLICATION-SOLID STATE-PROBLEMS
  1. Classify the following as amorphous or crystalline solids: polyurethan...

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  2. The refractive index of a solid is observed to have the same value alo...

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  3. Is the conductivity of ionic solids due to the presence of ions ?

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  4. A solid is a good conductor of electricity. It is alos malleable and d...

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

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  6. Give the nature of bonding in the following solids : (i) ice (ii) io...

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  7. What is the nature of the forces present in the noble gas atoms ?

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  8. Why is the structure of ice porous ?

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  9. Which net work solid is a good conductor of electricity ?

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  10. Of the substances Xe, CH(3)Cl and HF, which has (a) Smallest dipole-...

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  11. In the fcc arrangement of A and B atoms whose A atoms are at corners o...

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  12. The number of atoms per unit cell in a simple cube, face - centred cub...

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  13. A unit cell consists of a cube in which anions (B) are present at each...

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  14. A unit cell consists of a cube in which the atoms A are occupying the ...

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  15. A compound made up of elements A and B crystallizes in the cubic struc...

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  16. An alloy of copper and gold crystallizes in cubic lattic, in which the...

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  17. Sodium crystallises in body centred cubic unit cell. What is the appro...

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  18. Calculate the approximate number of unit cells present in 1 g of gold....

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  19. An alloy of Cu, Ag and Au is found to have copper constituting the c.c...

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  20. A compund is made of two elements P and Q are in ccp arrangement while...

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