Question

The force of attraction between particles of a___ is maximum whereas between the particles of a___ are minimum.
A.Solid, liquid
B.Liquid, gas
C.Solid, gas
D.Liquid, solid

Answer 1

Hint: Particles of gases move at high speed due to the maximum free spaces available between particles. Solids on the other hand have less diffusion due to fixed volume and fixed shape.

Complete step by step solution:
- Everything in the universe is made up of matter. All the matter is made up of particles. The size of particles in a matter is extremely small. Particles of the matter have spaces between them as during mixing the particles of one type of matter get into spaces between particles of the other. Particles of matter are continuously moving due to kinetic energy and this movement increases with the increase in temperature. Particles of matter have force acting between them which holds all the particles of matter together. The strength of this force of attraction varies from one kind of matter to another.
- Matter exists in three states namely solid, liquid and gas. These states of matter arise due to the variation in the characteristics of the particles of matter. Solids have definite shape, fixed volumes, tendency to maintain their shape and are rigid. Strength of force acting between particles of solid is so strong which helps solid to have such properties. On the other hand, liquids have no fixed volume but have a fixed volume as they take the shape of the vessel in which they are filled. The rate of diffusion of liquids is higher than that of a solid due to the fact that the liquid particles can move freely because of greater space between them and lesser force of attraction compared to solid. Gas particles move randomly at very high speed due to the maximum free space between the particles and minimum force of attraction between them. Gases are highly compressible and gases show the property of diffusing maximum.

Thus, the correct option is C.

Note: Matter does change its state under the effect of change in temperature and pressure. At higher temperatures, the intermolecular forces decrease and solids change to liquid and then to gaseous state.