Question

The intermixing of particles of two different types of matter in their own is known as _______________
(A) Effusion
(B) Diffusion
(C) Mixture of particles
(D) None of the above

Answer 1

Hint: The intermixing of particles of two different types of matter in their own is known as diffusion. Diffusion takes place from a region of higher concentration to a region of lower concentration. So basically a concentration gradient is required for the process of diffusion to occur.

Complete answer:
Diffusion is the process in which the particles mix with each other. The reason behind this process is when one particle of one matter is attached by a second particle of another matter then the spaces between particles are filled up by the other particles of another matter. This is occurring in three states of the matter like solid, liquid and gas and the spaces occur in these states by the variation in the characteristics of the particles of the matter, for example- mixing of ink in water.
Liquids can diffuse in their own states also. The particles of the liquid can diffuse more freely and have the best space. They are much more compressible than solids. Then due to this property ink can be easily mixed with water.
There also exist some liquids which have distinct densities and textures that are not able to carry out diffusion with each other. These types of liquids have different sizes. In such cases, the temperature of the solution is allowed to rise. Increase in temperature increases the intermolecular spaces thereby helping both the liquids to acquire the intermolecular spaces thus carrying out the diffusion.

So, the correct choice is B.

Note: A detailed insight into the three states of matter is necessary to understand the concept of diffusion, having best knowledge about their nature and characteristics too. On increasing temperature, the process of diffusion also increases because the particles attain higher kinetic energy.