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Amorphous solids -...

Amorphous solids -

A

Possess sharp melting points

B

Undergo clean cleavage when cut with knife

C

Do not undergo clean cleavage when cut with knife

D

Possess orderly arrangement over long distances

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The correct Answer is:
C
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Which of the following statements about amorphous solid is incorrect ?

Select the correct statements. (A) Crystalline solids have long range order. (B) Crystalline solids are isotropic. (C) Amorphous solid are sometimes called pseudo solids. (D) Amorphous solids soften over a range of temperatures. (E) Amorphous solids have a definite heat of fusion. Choose the most appropriate answer from the options given below.

MOTION-SOLID STATE-Exercise - 1 (Crystalline & amorphous solids, Classification of crystalline solids)
  1. Which one is called pseudo solid?

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  2. Graphite is an example of -

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  3. Amorphous solids -

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  4. Wax is an example of -

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  5. Crystals which are good conductor of electricity and heat are known as...

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  6. Iodine crystals are -

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  7. Which among the following will show anisotropy ?

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  8. Which is covalent solid-

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  9. The arranegement ABC, ABC, ABC ……. is referred as

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  10. The most malleable metals (Cu,Ag,Au) have close-packaing of the type:

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  11. The maximum percentage of available volume that can be filled in a fac...

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  12. An elementoccurring in the bcc structure has 12.08 xx 10^(23) unit cel...

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  13. The space occupied by b.c.c. arrangement is approximately

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  14. Transition metals, when they form interestitial compounds, the non-met...

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  15. If a is the length of unit cell, then which one is correct relationshi...

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  16. The number of atoms present in a simple cubic unit cell are-

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  17. The number of atoms/molecules contained in one face centred cubic unit...

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  18. In a body centred cubic arrangement, the number of atoms per unit cell...

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  19. The fraction of total volume occupied by the atoms in a simple cubic i...

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  20. 6 :6 of NaCl coordination changes to 8 : 8 coordination on:

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