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Which of the following is not a correct ...

Which of the following is not a correct statement ?

A

Any material can be made amorphous by quenching it's melt (or) freezing it's vapour

B

The melt of an amorphous solid when slowly cooled it will become crystalline

C

Glass melt over a range of temperatures

D

Quartz has irregular chains of `SiO_(4)` units.

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AAKASH SERIES-SOLIDS STATE-OBJECTIVE EXERCISE - 1 (TYPES OF SOLIDS OF CRYSTAL STRUCTURES)
  1. Covalent solid among the following is

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

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

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

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

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

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

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  8. The structural unit of a crystal is called

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

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

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  11. Number of space lattices presnt in triclinic System

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

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

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

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  15. How many kinds of primitive unit cells are possible

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  16. {:("(Unitcell)","(no of atoms per unitcell)"),("A) Simple cube","1) 4"...

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  17. The number of space lattices possible for the crystalographic dimensio...

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  18. In which of the following crystal systems F.C.C unit cells exists ?

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  19. Out of seven crystal systems how many have body centred unit cell ?

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  20. How many unit cells are possible for the crystallographic dimensions a...

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