The kinetic theory of gases is based on certain assumptions which help to explain the behaviour of gases.
Random motion of molecules explains diffusion of gases. Elastic collisions explain conservation of kinetic energy.
Kinetic theory is applicable mainly to ideal gases and fails for real gases at high pressure and low temperature.
Q1. According to kinetic theory, gas molecules are: A) At rest B) In vibratory motion C) In continuous random motion D) In circular motion Answer: C Q2. Volume of gas molecules is assumed to be: A) Very large B) Equal to container C) Negligible D) Infinite Answer: C Q3. Collisions between gas molecules are: A) Inelastic B) Partially elastic C) Perfectly elastic D) Non-elastic Answer: C Q4. Pressure of gas is due to: A) Attraction between molecules B) Weight of gas C) Collision of molecules with walls D) Volume of molecules Answer: C Q5. Intermolecular forces between gas molecules are: A) Strong B) Weak C) Attractive D) Negligible Answer: D Q6. Average kinetic energy of gas molecules depends on: A) Pressure B) Volume C) Temperature D) Mass Answer: C Q7. Kinetic theory is applicable mainly to: A) Real gases B) Liquids C) Solids D) Ideal gases Answer: D Q8. Which phenomenon is explained by random motion of gas molecules? A) Pressure B) Diffusion C) Refraction D) Reflection Answer: B
Applicable mainly to ideal gases.
Direct MCQs are frequently asked on assumptions and their implications.
