When a mixture of two or more non-reacting gases are enclosed in a container then the total pressure exerted by the gaseous mixture is equal to the sum of partial pressure of the components in the mixture.
eg, \({CO + H_2}\) are non-reacting gases. Hence,
Dalton's law of partial pressure is applicable to this system.
So, the correct answer is (A): \({CO + H_2}\)
The matter is made up of very tiny particles and these particles are so small that we cannot see them with naked eyes.
The three states of matter are as follows: