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Crystalline solids have :...

Crystalline solids have :

A

sharp melting point

B

anisotropic character

C

the character of supercooled liquid

D

smooth cooling curve

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The correct Answer is:
A, B
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Solids have properties like rigidity a definite shape and a define volume. If intermolecular forces are greater than thermal energy, substances exist as solid. Solids can be classified into two types. Crystalline solids and amorphous solids, Crystalline solids have regular arrangement of particles, definite geometric shapes, sharp melting points and definite heat of fusion. They are anisotropic and undergo clean cleavage. On the other hand, amorphous solid have no regular arrangement of particles, irregular shapes, melt over a range of temperature, no definite heat of fusion. They are isotropic and undergo irregular cleavage. The melting point of crystalline solids is sharp due to:

Solids have properties like rigidity a definite shape and a define volume. If intermolecular forces are greater than thermal energy, substances exist as solid. Solids can be classified into two types. Crystalline solids and amorphous solids, Crystalline solids have regular arrangement of particles, definite geometric shapes, sharp melting points and definite heat of fusion. They are anisotropic and undergo clean cleavage. On the other hand, amorphous solid have no regular arrangement of particles, irregular shapes, melt over a range of temperature, no definite heat of fusion. They are isotropic and undergo irregular cleavage. Solid X is very hard, electrical insulator in solid as well as molten state and melts at extremely high temperature. Name the type of solid is it?

Crystalline solid are

(A) Crystalline solids are anisotropic. (R) Crystalline solids are not as closely packed as amorphous solids.

Crystalline solids are called true solids.Why ?

Assertion (A) : Crystalline solids are anisotropic in nature. Reason (R) : Crystalline solids melt at a sharp and characteristic temperature.

OP TANDON-STATES OF MATTER (SOLID STATE)-OBJECTIVE QUESTIONS (LEVEL -A)
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  2. Which of the following compounds is metallic and ferromagnetic ?

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  3. A metal crystallises in a face centred cubic structure. If the edge le...

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  4. Cations are present in the interstitial sites in …………… .

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  5. If a metal crystallises in a face-centred cubic structure with metalli...

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  6. In a face centred cubic lattice unit cell is shared equally by how man...

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  7. In face centred cubic structure, the octahedral voids are located at :

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  8. Crystalline solids have :

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  9. In the unit cell of NaCl, which of the following statements are correc...

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  10. In which of the following solids, cations occupy tetrahedral voids ?

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  11. In which of the following type of solids, the coordination number and ...

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  12. Which of the following statements are correct about the diamagnetic so...

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  13. Which of the following is/are correct about the point defects ?

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  14. Which of the following informations are correct about CsCl ?

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  15. Sodium oxide Na(2)O is a crystalline solid. It has :

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  16. Which are not true about the amorphous solids ?

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  17. Superconductors are technologically and commercially important substan...

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  18. The number of nearest neighbours with which a given sphere a packing i...

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  19. Edge length of NaCl unti cell is 562 pm. Then:

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  20. Select the correct statements among following : (a=edge length of un...

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