Practice BITSAT Physics Kinetic Theory MCQs provided below. The MCQ Questions for Full Syllabus Kinetic Theory Physics with answers and follow the latest BITSAT/ NCERT and KVS patterns. Refer to more Chapter-wise MCQs for BITSAT Full Syllabus Physics and also download more latest study material for all subjects
MCQ for Full Syllabus Physics Kinetic Theory
Full Syllabus Physics students should review the 50 questions and answers to strengthen understanding of core concepts in Kinetic Theory
Kinetic Theory MCQ Questions Full Syllabus Physics with Answers
Question: Five gas molecules chosen at random are found to have speeds of 500, 600, 700, 800 and 900 m/s. Then which of the following statements is correct?
- a) The root mean square speed and the average speed are the same.
- b) The root mean square speed is 14 m/s higher than the average speed.
- c) The root mean square speed is 14 m/s lower than the average speed.
- d) The root mean square speed is √14 m/s higher than the average speed
Answer: The root mean square speed is 14 m/s higher than the average speed.
Question: The molecules of a given mass of a gas have r.m.s. velocity of 200 ms–1 at 27°C and 1.0 × 105 Nm–2 pressure. When the temperature and pressure of the gas are respectively, 127°C and 0.05 × 105 Nm–2, the r.m.s. velocity of its molecules in ms–1 is :
- a) 100 √2
- b)
- c)
- d)
Answer:
Question: A vessel of volume 20L contains a mixture of hydrogen and helium at temperature of 27°C and pressure 2 atm. The mass of mixture is 5g. Assuming the gases to be ideal, the ratio of mass of hydrogen to that of helium in the given mixture will be
- a) 1 : 2
- b) 2 : 3
- c) 2 : 1
- d) 2 : 5
Answer: 2 : 5
Question: In the kinetic theory of gases, which of these statements is/are true ? (i) The pressure of a gas is proportional to the mean speed of the molecules. (ii) The root mean square speed of the molecules is proportional to the pressure. (iii) The rate of diffusion is proportional to the mean speed of the molecules. (iv) The mean translational kinetic energy of a gas is proportional to its kelvin temperature.
- a) (ii) and (iii) only
- b) (i),(ii)and (iv) only
- c) (i) and (iii) only
- d) (iii) and (iv) only
Answer: (iii) and (iv) only
Question: If a gas has ‘n’ degrees of freedom, the ratio of the specific heats g of the gas is
- a)
- b)
- c)
- d)
Answer:
Question: Two gases occupy two containers A and B the gas in A, of volume 0.10m3, exerts a pressure of 1.40 MPa and that in B of volume 0.15m3 exerts a pressure 0.7 MPa. The two containers are united by a tube of negligible volume and the gases are allowed to intermingle. Then if the temperature remains constant, the final pressure in the container will be (in MPa)
- a) 0.70
- b) 0.98
- c) 1.40
- d) 210
Answer: 0.98
Question: The average translational kinetic energy of O2 (molar mass 32) molecules at a particular temperature is 0.048 eV. The translational kinetic energy of N2 (molar mass 28) molecules in eV at the same temperature is
- a) 0.0015
- b) 0.003
- c) 0.048
- d) 0.768
Answer: 0.048
Question: For a gas if ratio of specific heats at constant pressure and volume is γ then value of degrees of freedom is
- a)
- b)
- c)
- d)
Answer:
Question: An air bubble of volume v0 is released by a fish at a depth h in a lake. The bubble rises to the surface. Assume constant temperature and standard atmospheric pressure above the lake. The volume of the bubble just before touching the surface will be (density) of water is ρ
- a) v0
- b) v0(rgh/p)
- c)
- d)
Answer:
Question: The molecules of a given mass of gas have a root mean square velocity of 200m s–1 at 27°C and 1.0 × 105 N m–2 pressure. When the temperature is 127°C and the pressure 0.5 × 105 Nm –2, the root mean square velocity in ms–1, is
- a)
- b)
- c)
- d)
Answer:
Question: 3 moles of an ideal gas at a temperature of 27°C are mixed with 2 moles of an ideal gas at a temperature 227°C, determine the equilibrium temperature of the mixture, assuming no loss of energy.
- a) 327°C
- b) 107°C
- c) 318°C
- d) 410°C
Answer: 107°C
Question: Which one the following graphs represents the behaviour of an ideal gas
- a)
- b)
- c)
- d)
Answer:
Question: The ratio of mean kinetic energy of hydrogen and oxygen at a given temperature is-
- a) 1 : 16
- b) 1 : 8
- c) 1 : 4
- d) 1 : 1
Answer: 1 : 1
Question: An ideal gas has volume V and pressure P. The total translational kinetic energy of the gas
- a)
- b)
- c)
- d)
Answer:
Question: One mole of a gas occupies 22.4 lit at N.T.P. Calculate the difference between two molar specific heats of the gas. J = 4200 J/kcal.
- a) 1.979 k cal/kmol K
- b) 2.378 k cal/kmol K
- c) 4.569 kcal/kmol K
- d) 3.028 k cal/ kmol K
Answer: 1.979 k cal/kmol K
Question: Four mole of hydrogen, two mole of helium and one mole of water vapour form an ideal gas mixture. What is the molar specific heat at constant pressure of mixture?
- a)
- b)
- c) R
- d)
Answer:
Question: A real gas behaves as an ideal gas
- a) At very low pressure and high temperature
- b) High pressure and low temperature
- c) High temperature and high pressure
- d) Low pressure and low temperature
Answer: At very low pressure and high temperature
Question: The ratio of mean kinetic energy of hydrogen and oxygen at a given temperature is-
- a) 1 : 16
- b) 1 : 8
- c) 1 : 4
- d) 1 : 1
Answer: 1 : 1
Question: 3 moles of an ideal gas at a temperature of 27°C are mixed with 2 moles of an ideal gas at a temperature 227°C, determine the equilibrium temperature of the mixture, assuming no loss of energy.
- a) 327°C
- b) 107°C
- c) 318°C
- d) 410°C
Answer: 107°C
Question: Five gas molecules chosen at random are found to have speeds of 500, 600, 700, 800 and 900 m/s. Then which of the following statements is correct?
- a) The root mean square speed and the average speed are the same.
- b) The root mean square speed is 14 m/s higher than the average speed.
- c) The root mean square speed is 14 m/s lower than the average speed.
- d) The root mean square speed is √14 m/s higher than the average speed.
Answer: The root mean square speed is 14 m/s higher than the average speed.
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Important Practice Resources for BITSAT Physics s
MCQs for Kinetic Theory Physics Full Syllabus
Students can use these MCQs for Kinetic Theory to quickly test their knowledge of the chapter. These multiple-choice questions have been designed as per the latest syllabus for Full Syllabus Physics released by BITSAT. Our expert teachers suggest that you should practice daily and solving these objective questions of Kinetic Theory to understand the important concepts and better marks in your school tests.
Kinetic Theory NCERT Based Objective Questions
Our expert teachers have designed these Physics MCQs based on the official NCERT book for Full Syllabus. We have identified all questions from the most important topics that are always asked in exams. After solving these, please compare your choices with our provided answers. For better understanding of Kinetic Theory, you should also refer to our NCERT solutions for Full Syllabus Physics created by our team.
Online Practice and Revision for Kinetic Theory Physics
To prepare for your exams you should also take the Full Syllabus Physics MCQ Test for this chapter on our website. This will help you improve your speed and accuracy and its also free for you. Regular revision of these Physics topics will make you an expert in all important chapters of your course.
You can get most exhaustive BITSAT Physics Kinetic Theory MCQs for free on StudiesToday.com. These MCQs for Full Syllabus Physics are updated for the 2025-26 academic session as per BITSAT examination standards.
Yes, our BITSAT Physics Kinetic Theory MCQs include the latest type of questions, such as Assertion-Reasoning and Case-based MCQs. 50% of the BITSAT paper is now competency-based.
By solving our BITSAT Physics Kinetic Theory MCQs, Full Syllabus students can improve their accuracy and speed which is important as objective questions provide a chance to secure 100% marks in the Physics.
Yes, Physics MCQs for Full Syllabus have answer key and brief explanations to help students understand logic behind the correct option as its important for 2026 competency-focused BITSAT exams.
Yes, you can also access online interactive tests for BITSAT Physics Kinetic Theory MCQs on StudiesToday.com as they provide instant answers and score to help you track your progress in Physics.