BSC SOLID STATE PHYSICS

Which one of the following is the property of an ionic compound?

• High melting and boiling points

• Low melting and boiling points

• Weak inter-atomic forces

• Non conductors of electricity

Which of the following covalent compounds conduct electricity?

• Silica

• Graphite

• Diamond

• Hydrogen chloride
  

What is the possible number of different types of lattices (3D)

• 4

• 8

• 14

• 17

The interplanar spacing of (220) planes of a FCC structure is 1.7458 Å. Calculate the lattice constant.

• 4.983 Å

• 2.458 Å

• 0

• 5.125 Å

Iron has a BCC structure with atomic radius 0.123 Å. Find the lattice constant.

• 4.587 Å

• 2.314 Å

• 0.2840 Å

• 0

Amorphous solids have _______ structure.

• Regular

• Linear

• Irregular

• Dendritic

The crystal lattice has a _________ regular arrangement.

• One-dimensional

• Two-dimensional

• Three-dimensional

• Four-dimensional

The smallest portion of the lattice is known as __________

• Lattice structure

• Lattice point

• Bravais crystal

• Unit cell

What is the coordination number of a simple cubic structure?

• 6

• 8

• 10

• 12

What is the atomic packing factor of BCC structure?

• 0.54

• 0.68

• 0.74

• 0.96