Question

The motion of particles of gas are:
(a) One-dimensional (b) Two-dimensional
(c) Three-dimensional (d) Up-down.

Answer 1

Explanation:

Gas – In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other. In most cases, there are essentially no attractive forces between particles.

Answer 2

The motion of particles of gas is two-dimensional. Thus, the correct option is (b).

Explanation:

• The particles of gas move in a continuous straight line.
• A straight line is expressed by two dimensions.
• Therefore, the motion of the gas particles must also be two-dimensional.