JEE Main Physics: Kinetic Theory of Gases Practice Questions

15 questions with answers and step-by-step solutions. Tap any question to see the full worked solution.

  1. Q1.
    According to the kinetic theory of gases, the average kinetic energy of a gas molecule is directly proportional to which of the following?
    Easy
  2. Q2.
    What is the value of the degrees of freedom for a monoatomic gas molecule?
    Easy
  3. Q3.
    The root mean square speed of gas molecules is given by which expression?
    Easy
  4. Q4.
    At what temperature will the root mean square speed of oxygen molecules be double its value at 27 degrees Celsius?
    Easy
  5. Q5.
    Which of the following assumptions is made in the kinetic theory of ideal gases?
    Easy
  6. Q6.
    Two identical containers contain helium and neon gas respectively at the same temperature and pressure. The ratio of the root mean square speeds of the helium a
    Medium
  7. Q7.
    A gas mixture consists of 2 moles of oxygen and 4 moles of argon at temperature T. Neglecting vibrational modes, the total internal energy of the system is
    Medium
  8. Q8.
    The mean free path of gas molecules depends on the diameter d of the molecules as
    Medium
  9. Q9.
    If the pressure of an ideal gas is doubled and the volume is halved, the temperature of the gas will
    Medium
  10. Q10.
    The ratio of the adiabatic exponent gamma for a mixture of 1 mole of a monatomic gas and 2 moles of a diatomic gas is
    Medium
  11. Q11.
    A mixture of two ideal gases with adiabatic exponents gamma1 and gamma2 and mole fractions x1 and x2 is kept in a container. What is the effective adiabatic exp
    Hard
  12. Q12.
    A vessel contains a gas at pressure P and temperature T. If the gas is replaced by another gas of molecular weight twice the first, at temperature 2T and pressu
    Hard
  13. Q13.
    Consider a gas of particles with mass m in a gravitational field g. The number density n(h) at height h follows the Boltzmann distribution. What is the ratio of
    Hard
  14. Q14.
    A container of volume V is divided into two parts by a partition. One part contains n moles of an ideal gas at temperature T, and the other is vacuum. If the pa
    Hard
  15. Q15.
    The mean free path of a gas molecule is lambda. If the temperature is doubled and the pressure is halved, what is the new mean free path?
    Hard

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