NCERT MCQ CLASS-11 CHAPTER-13 | PHYSICS NCERT MCQ | KINETIC ENERGY | EDUGROWN

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