A fluid is a ___________

What is the percentage of Nitrogen in the atmosphere approximately?

At an instance different particles have ____ speeds.

Compressibility can be expressed as ___

What is the ratio of critical temperature to Boyle’s temperature of the same gas?

Gases do not have a fixed shape.

How much does the volume of the gas increase if we increase the temperature by 1 Degree?

Which of the following may not be a source of thermal energy?