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Explanation:
4).Reason: Gases have a negligible intermolecular force of attraction between the particles of gas. The random motion of particles in all the directions is experience in the vessel. Hence, the gas fills completely the vessel in which it is kept.
5.)The pressure exerted by a gas is due to the random motion of particles in the gas. Gases have weak intermolecular forces and the particles in continuous random motion and these particles collide with the walls of the container. These collisions with the walls of the container exerts pressure on the gas.
6.)A wooden table should be called a solid. Reason: It has a definite shape and volume. It is very rigid and cannot be compressed i.e., it has the characteristics of a solid. There is a strong force of attraction between molecules of wood and intermolecular space is the least.
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Answer:
4) A gas exerts pressure on the walls of the container because of the force of attraction between particles of gas is negligible . Because of this particles of gas moves in every direction filling the container .
5) The pressure exerted by a gas is due to the random motion of particles in the gas . As gas have weak intermolecular force and particles in continuous random motion and these particles collide with the wall of the container . These collisions with the wall of the container exerts pressure on the gas .
6) A wooden table is called solid because it has a definite shape and volume . It is rigid and cannot be compressed . It also has the characteristics of solid .