Chapter:Kinetic Theory Of Gases
Kinetic Theory of Gases describes a gas as a large number of submicroscopic particles, all of which are in constant, rapid, random motion. The randomness arises from the particles’ many collisions with each other and with the walls of the container. KTG explains the macroscopic properties of gases, such as pressure, temperature, viscosity, thermal, conductivity and volume, by considering their molecular composition and motion. The theory posits the gas pressure results from particles’ collisions with the walls of a container at different velocities.
Although no question was asked in the previous year, the period between 2013-2018 had question being asked with 2015 alone accounting for 2 questions. With a total of 8 questions being asked in the past 11 years, this chapter falls in the category of low-weighted chapter and hence, we should be expecting at max 1 question from this chapter.
The below given graph will illustrate the above-mentioned analysis:
The important topics to be covered from this chapter are:
• Equation of State of a perfect gas
• Work done in compressing a gas
• Kinetic Theory of Gases
• Concept of Pressure
• Kinetic Interpretation of Temperature
• RMS Speed of Gas Molecules
• Degrees of Freedom
• Law of Equi-partition of Energy
• Application to Specific Heat Capacities of Gases
• Concept of Mean Free Path
• Avogadro’s Number
Tips and Tricks:
1. Be thorough with the NCERT portion. Here is the link to the NCERT PDF version of this chapter:
2. Make Mind Map of the entire chapter for easier revision.
3. Solve the past year paper sincerely and make them at your fingertips and get acquainted with the type of question that can be asked in the coming papers.
4. Practice a large number of questions from this topic and leave no stones unturned to make this chapter one of your strengths.
5. Online video lectures must be looked upon as they will provide interactive animations thereby making the subject matter easier to understand.