a) A gas fills completely the vessel in which it is kept. (b) A gas excerts pressure on the walls of the container fc) A wooden table should be called a solid (d) We can easily move our hard indir but to do the same though a solid block of wood we need a karate expert.
Answers
Dear student,
Q. A gas fills completely the vessel in which it is kept.
Reason: The particles of gas i. e. the atoms and molecules are separated from each other. They are shapeless and are distributed uniformly in the container in which they are kept.
Q. A gas exerts pressure on the walls of the container.
Reason: Molecules and atoms of gas in a container have kinetic energy making them move persuasively. As a result, they keep pushing the walls of the container in which they are kept and try to set free.
Q. A wooden table should be called a solid.
Reason: Yes as the wooden table is hard and solids are hard.
Q. We can easily move our hands in the air but to do the same through a solid block of wood we need a karate expert.
Reason: A karate experts knows the point & projection of penetration of solid objects. Hence, he using his techniques, can easily break it without kuch harm to his hands. On the hand, air being gas, has negligible effect on hands when passed through.