In This Post we are providing Chapter-13 Kinetic Energy NCERT MCQ for Class 11 Physics which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.
NCERT MCQ ON KINETIC ENERGY
Question 1: In kinetic theory of gases, it is assumed that molecules
- a) have same mass but negligible volume
- b) have different mass as well as volume
- c) have same volume but mass can be different
- d) have same mass but can have different volume
Answer: have same mass but negligible volume
Question 2: The internal energy of a gram-molecule of an ideal gas depends on
- a) pressure alone
- b) volume alone
- c) temperature alone
- d) both on pressure as well as temperature
Answer: pressure alone
Question 3: The phenomenon of Browninan movement may be taken as evidence of
- a) kinetic theory of matter
- b) electromagnetic theory of radiation
- c) corpuscular theory of light
- d) photoelectric phenomenon
Answer: kinetic theory of matter
Question 4: According to kinetic theory of gases, at absolute zero temperature
- a) molecular motion stops
- b) liquid hydrogen freezes
- c) liquid helium freezes
- d) water freezes
Answer: molecular motion stops
Question 5: At a given temperature the force between molecules of a gas as a function of intermolecular distance is
- a) first decreases and then increases
- b) always increases
- c) always decreases
- d) always constant
Answer: first decreases and then increases
Question 6: For Boyle’s law to hold, the gas should be
- a) perfect and of constant mass and temperature
- b) real and of constant mass and temperature
- c) perfect and constant temperature but variable mass
- d) real and constant temperature but variable mass
Answer: perfect and of constant mass and temperature
Question 7: Boyle’ law is applicable for an
- a) isothermal process
- b) isochoric process
- c) adiabatic process
- d) isobaric process
Answer: isothermal process
Question 8: The deviation of gases from the behavior of ideal gas is due to
- a) attraction of molecules
- b) absolute scale of temp
- c) covalent bonding of molecules
- d) colourless molecules
Answer: attraction of molecules
Question 9: In a mixture of gases at a fixed temperature
- a) heavier molecule has lower average speed
- b) lighter molecule has lower average speed
- c) heavier molecule has higher average speed
- d) None of these
Answer: heavier molecule has lower average speed
Question 10: The average kinetic energy of gas molecules depends upon which of the following factor?
- a) Temperature of the gas
- b) Nature of the gas
- c) Volume of the gas
- d) None of these
Answer: Temperature of the gas
Question 11: The temperature of a gas is a measure of
- a) the average kinetic energy of the gaseous molecules
- b) the average potential energy of the gaseous molecules
- c) the average distance between the molecules of the gas
- d) the size of the molecules of the gas
Answer: the average kinetic energy of the gaseous molecules
Question 12: In the isothermal expansion of 10g of gas from volume V to 2V the work done by the gas is 575J. What is the root mean square speed of the molecules of the gas at that temperature?
- a) 499m/s
- b) 532m/s
- c) 520m/s
- d) 398m/s
Answer: 499m/s
Question 13: In a diatomic molecules, the rotational energy at a given temperature
- a) obeys Maxwell’s distribution
- b) have the same volue for all molecules
- c) equals the translational kinetic energy for each molecule
- d) None of these
Answer: obeys Maxwell’s distribution
Question 14: Cooking gas containers are kept in a lorry moving with uniform speed. The temperature of the gas molecules inside will.
- a) remains the same
- b) decrease for some and increase for others
- c) decrease
- d) increase
Answer: remains the same
Question 15: Pressure exerted by a gas is
- a) directly proportional to the density of the gas
- b) directly proportional to the square of the density of the gas
- c) inversely proportional to the density of the gas
- d) independent of density of the gas
Answer: directly proportional to the density of the gas
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