Question

Give reasons for the following observations:
a. A gas completely fills the vessel in which it is kept.
b. A gas exerts pressure on the walls of the container,
C. Naphthalene balls disappear with time without leaving any solid.
d. We can easily move our hand in air but to do the same through a solid block of
wood, we need a karate expert.
e. Our palm feel cold when we put some acetone or petrol or perfume on it.​

Answer 1

Answer:

a. Gas completely fills because there is no definite shape or volume.

b. Yes it exerts because of compressibility

c. Naphthalene balls disappear due to sublimation

d. Due to intermolecular force