### NEET Chemistry - New - Solid State

#### 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 bee lattice 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