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Which of the following statements is not...

Which of the following statements is not true about crystalline solids?

A

Polar molecular solids have higher enthapies of vaporisation than those of non polar molecular.

B

Graphite, though covalent solid is a good conductor of electricity

C

Ionic solids are conductors in molten state

D

Non-plar molecular solids have London forces between the consituents and have higher melting points than polar molecular solids.

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MODERN PUBLICATION-SOLID STATE-EXERCISE
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  2. In which of the following pair, both the crystals are not of the same ...

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  3. Which of the following statements is not true about crystalline solids...

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  4. What is the ratio by mass of Na and Cl in sodium chloride (NaCl) ?

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  5. The crystal system of a compound with unit cell dimensions alpha=0.387...

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  6. If three elements P, Q and R crystalline in a cubic solid lattice with...

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  7. An element crystallize in fcc lattice and edge length of unit cell is ...

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  8. How many orbitals are present in f subshell.

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  9. An element (at mass 60) havind FCC structure has a density of 6.23"g c...

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  10. The number of atoms per unit cell in BCC is

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  11. Copper crystallizes with face centred cubic unit cell. If the radius o...

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  12. Ferrous oxide has a cubie structure and edge length of the uint ce...

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  13. In a face centred cubic unit cell what is the volume occupied?

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  14. The apperance of colour in solid alkeli metal halide is generally due ...

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  15. CsBr crystallizes in a body centred cubic latice. The unit cell length...

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  16. If NaCl is doped with 10^(-3) mol% of SrCI2 what is the concentration ...

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  17. The fraction of volume occupied by atoms in a primitive cubic unit cel...

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  18. If a is the length of the side of a cube, the distance between the bod...

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  19. Lithium forms body centred cubic structure. The length of the side is ...

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  20. The number of octahedral sites per sphere in fcc structure is

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