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Which of the following melts below 298 k...

Which of the following melts below 298 k.

A

`NaCl_((s))`

B

`Si_((s))`

C

`Ar_((s))`

D

`Na_((s))`

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AAKASH SERIES-SOLIDS STATE-OBJECTIVE EXERCISE - 1 (TYPES OF SOLIDS OF CRYSTAL STRUCTURES)
  1. Which of the following is covalent solid

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  2. NaCl is an example of

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  3. Which of the following melts below 298 k.

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  4. For a covalent solid, the units which occupy lattice points are

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  5. Which of the following does not give any diffraction bands with X-rays...

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  6. Which of the following is not a crystalline solid?

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  7. Covalent solid among the following is

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  8. Among solids, the highest melting point is exhibited by

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  9. Which of the following is not a correct statement ?

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  10. {:("Column A","Column B"),("A) Glass","1) Framework silica"),("B) Quar...

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  11. (A) : Crystalline solids have sharp and chara cteric melting points. ...

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  12. The maximum displacement perpendicular to the motion of the wave is kn...

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  13. By passing X-rays through copper sulphate crystals diffraction band is...

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  14. The structural unit of a crystal is called

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  15. (A): Glass possess sharp melting point. (R) : Glass is a pseudo soli...

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  16. The angle corresponding to maximum diffra ction of x-rays on solid cry...

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  17. Number of space lattices presnt in triclinic System

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  18. Graphically the total number of fundamental spatial arrangements possi...

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  19. In case of a cubic system, the number of types of space lattices

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  20. The number of points at the centre of the primitive unit cell is

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