NEET Chemistry - New - Solid State

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Question - 1

In calcium fluoride, having the fluorite structure, the coordination number for calcium ion (Ca2+) and fluoride ion (F-) are :

  • A 4 and 2
  • B 6 and 6
  • C 8 and 4
  • D 4 and 8

Question - 2

The vacant space in a bcc unit cell is:

  • A 48%
  • B 23%
  • C 32%
  • D 26%

Question - 3

Which of the following statements is not correct?

  • A The number of carbon atoms in a unit cell df diamond is 4.
  • B The number of Bravais lattices in which a crystal can be categorized is 14
  • C The fraction of the total volume occupied by the atoms in a primitive cell is 0.48.
  • D Molecular solids are generally volatile

Question - 4

The fraction of total volume occupied by the atoms present in a simple cube is :

  • A \(\frac { \pi }{ \sqrt [ 3 ]{ 2 } } \)
  • B \(\frac { \pi }{ \sqrt [ 4 ]{ 2 } } \)
  • C \(\frac { \pi }{ 4 } \)
  • D \(\frac { \pi }{ 6 } \)

Question - 5

In a face-centered cubic lattice, a unit cell is shared equally by how many unit cells?

  • A 2
  • B 4
  • C 6
  • D 8

Question - 6

A compound formed by elements X and crystallizes in a cubic structure in which the X atoms are at the corners of a cube and the Y atoms are at the facecentres. The formula of the compound is :

  • A XY3
  • B X3Y
  • C XY
  • D XY2

Question - 7

When Zn converts from melted state to its solid state, it has hcp structure, then find the number of nearest atoms?

  • A 6
  • B 8
  • C 12
  • D 4

Question - 8

Cation and anion combine in a crystal to form following type of compound?

  • A ionic
  • B metallic
  • C covalent
  • D dipole-dipole.

Question - 9

In cube of any crystal A-atom placed at every corners and B-atom placed at every centre of face. The formula of compound is :

  • A AB
  • B AB3
  • C A2B2
  • D A2B3

Question - 10

In crystals of which one of the following ionic compounds would you expect maximum distance between centres of cations and anions?

  • A CsI
  • B CsF
  • C LiF
  • D LiI
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