Kinetic Energy - MCQ - Basic Level

Physics is an important subject in preparation for various Competitive exams. To keep a track of your preparation we have designed a small quiz of Basic Level Questions on Kinetic Energy. You have 10 minutes to solve the quiz, click the start timer button in order to start the timer and then click on submit button at the end to submit the quiz and view your scores and correct answers.

Q1. If a piston is pushed rapidly into a container of gas, what will happen to the kinetic energy of the molecules of gas and to the temperature of the gas

•  Both will increase
•  Kinetic energy increases but the temperature remains unchanged
•  Kinetic energy increases while the temperature decreases
•  Kinetic energy is unchanged while the temperature increases

Q2. A sealed container with negligible coefficient volumetric expansion contains helium (a monoatomic gas). When it is heated from 300 K to 600 K, the average K.E. of helium atoms is

•  Halved
•  Unchanged
•  Doubled
•  Increased by factor √2

Q3. At 0 K which of the following properties of a gas will be zero

•  Kinetic energy
•  Potential energy
•  Vibrational energy
•  Density

Q4. The ratio of mean kinetic energy of hydrogen and oxygen at a given temperature is

•  1 : 16
•  1 : 8
•  1 : 4
•  1 : 1

Q5. The average kinetic energy of a gas molecule at 27°C is 6.21 x 10-21 J. Its average kinetic energy at 127°C will be

•  52.2 x 10-21 J
•  5.22 x 10-21 J
•  10.35 x 10-21 J
•  11.35 x 10-21 J

Q6. At 27°C temperature, the kinetic energy of an ideal gas is E1 If the temperature is increased to 327°C, the kinetic energy would be

•  2 E1
•  1/2 E1
•  √2 E1
•  1/√2 E1

Q7. The kinetic energy per gm mol for a diatomic gas at room temperature is

•  3RT
•  5/2 RT
•  3/2 RT
•  1/2 RT

Q8. The ratio of mean kinetic energy of hydrogen and nitrogen at temperature 300 K and 450 K respectively is

•  3:2
•  2:3
•  2:21
•  4:9

Q9. If the volume of a gas is doubled at constant pressure, the average translational kinetic energy of its molecules will

•  Be doubled
•  Remain same
•  Increase by a factor √2
•  Become four times

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Kinetic Energy - MCQ - Basic