Question

Fill in the blank by choosing the correct words from the options given below:

The zig-zag movement of particles suspended in air or water is called ________ movement.

• A. Brownian
• B. Higher
• C. Stronger
• D. Melting
• E. Liquid
• F. Fixed

Answer 1

The correct option is A

Brownian

Explanation for the correct option:

(A) Brownian

• In fluids, a particle changes its path when another particle collides with it. Further collisions cause the particle to follow a random, zig-zag motion which is known as Brownian movement.
• Brownian movement causes the particles in a fluid to be in constant motion.
• It involves a transfer or exchange of energy between the particles.

Explanation for incorrect options:

(D) Melting:

• The process by which a substance’s solid-state change into the liquid state at a constant temperature by absorption of heat is known as fusion or melting.
• The very temperature at which the melting occurs at normal atmospheric pressure is known as the melting point, wherein a matter exists both in solid and liquid state

Therefore, the zig-zag movement of particles suspended in air or water is called Brownian movement.