Solid state Quiz

1/10

Among the following crystal systems, the one that forms two types of unit cells is _______.

A. Triclinic

B. Monoclinic

C. Hexagonal

D. Rhombohedral

2/10

Which of the following statements about crystalline solids is correct?

A) They have a disordered atomic arrangement.

B) They have a definite and repeating three-dimensional pattern.

C) They are always amorphous.

D) They do not have a well-defined melting point.

3/10

What is the coordination number of each atom in a body-centered cubic (BCC) crystal structure?

A) 6

B) 8

C) 10

D) 12

4/10

In a semiconductor, the forbidden energy gap between the valence band and conduction band is typically in the range of:

A) 0.01 eV to 0.1 eV

B) 0.1 eV to 1 eV

C) 1 eV to 5 eV

D) 5 eV to 10 eV

5/10

Which of the following materials exhibits ferromagnetism at room temperature?

A) Aluminum

B) Copper

C) Iron

D) Silver

6/10

The electrical conductivity of a semiconductor can be increased by:

A) Increasing temperature

B) Decreasing doping

C) Decreasing temperature

D) Increasing doping

7/10

Which of the following is a two-dimensional (2D) crystal structure?

A) Cubic

B) Hexagonal

C) Tetrahedral

D) Simple cubic

8/10

The process of adding impurities intentionally to a semiconductor to increase its conductivity is called:

A) Doping

B) Ionization

C) Covalent bonding

D) Lattice distortion

9/10

What is the most common crystal structure for diamond?

A) Cubic

B) Hexagonal

C) Tetragonal

D) Orthorhombic

10/10

The unit cell of a crystal is the:

a) Smallest repeating structure in the crystal

b) Largest repeating structure in the crystal

c) Most complex repeating structure in the crystal

d) Irregularly shaped structure in the crystal

Solid State Result: