Question

When a crystal of potassium permanganate is placed at the bottom of water in a beaker, the water in the whole beaker turns purple on its own , even without stirring. This is an example of
A. Distribution
B. Intrusion
C. Diffusion
D. Effusion

Answer 1

Hint: A dense purple solution is formed in the water at the base of the beaker because of the random movement of potassium permanganate particles as they will break into smaller particles. After sometime, the purple solution will slowly and steadily spread into the water.

Complete step by step answer:
Potassium permanganate and water are made up of tiny particle, such that particle of water are colorless and particle of potassium permanganate have color, such that when particle of potassium permanganate kept in water, it gets break down into smaller pieces, hereby occupy the spaces between water molecule and imparting purple color to water.

So, the correct answer is Option C.

Additional Information:
Diffusion refers to the process by which molecules interact as a result of their kinetic energy of random motion. Diffusion is the net circulation of molecules or atoms from a region of high concentration (or high chemical potential) to a region of low concentration. Diffusion is a natural and physiological process that occurs on its own, without stirring or stirring the solution. Liquid and gases undergo diffusion because the molecules are able to move at random. The molecules collide and change direction.
Diffusion is important for the following reasons:
During the process of respiration, this process helps circulate carbon dioxide gas through the cytoplasm into the blood.
In all green plants, the water present in the soil is transmitted to the plants through its original hair cells.

Note: Potassium permanganate is broadly used in the chemical industry as an oxidizing agent. It is also a medicine for dermatitis and wound cleansing. It is also on the WHO model list for the safest and effective medicines to cure any health problem.