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Which is covalent network solid?...

Which is covalent network solid?

A

`Fe_2O_3`

B

`NF_3`

C

Graphite

D

All of the three

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CHETANA PUBLICATION-SOLID STATE-EXERCISE
  1. p-type semi conductor is formed when trace amount of impurity is added...

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  2. n-type semiconductor is formed when trace amount of impurity is added ...

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  3. Which is covalent network solid?

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  4. Which one of the following is a good conductor of electricity?

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  5. Which of the following defect, if presetn, lowers the density of the c...

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  6. How many kinds of space lattices are possible in a crystal?

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  7. Which has minimum present volume occupied by the sphere?

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  8. In hcp structure, the packing fraction is

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  9. Which of the followign best defines a crystal?

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  10. Calculate number of atoms in : SSC

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  11. Calculate number of atoms in : FCC

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  12. Calculate number of atoms in : BCC

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  13. Sodium chlorid crystal consists of:

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  14. In a face-centred cubic arrangement of metal, the co-ordination number...

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  15. The co-ordination number of hexagonal closest packed structure is

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  16. The atomic radius for a face-centred cubic cell of lattice parameter '...

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  17. The number of atoms per unit cell is 2, the arrangement is

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  18. The name given to the ABABABAB… type of arrangement is

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  19. The atomic radius for a face-centred cubic cell of lattice parameter '...

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  20. Explain packing in simple cubic unit cell crystal.

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