This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part Ii > Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following statements is true according to the kinetic theory of gases? A) Gas particles are in constant random motion. B) Gas particles are stationary. C) Gas particles move in a fixed pattern. D) Gas particles do not collide with each other. Show Answer Correct Answer: A) Gas particles are in constant random motion. 2. According to Law of Equipartition of Energy A) Energy of the system of particles is equally distributed amongst various degrees of freedom. B) Energy possessed by each particle in each degree of freedom is KT/2. C) All the above. D) None of the above. Show Answer Correct Answer: C) All the above. 3. A change in pressure would have the greatest effect on the solubility of a A) Solid in a liquid. B) Liquid in a solid. C) Gas in a liquid. D) Liquid in a liquid. Show Answer Correct Answer: C) Gas in a liquid. 4. Which of the following statements about the particle of a gas is true? A) The particles of a gas vibrate about fixed positions. B) The particles of a gas are packed close together in a disorderly arrangement. C) The particles of a gas are far apart and move in all directions. D) The particles of a gas are stationary in an orderly arrangement. Show Answer Correct Answer: C) The particles of a gas are far apart and move in all directions. 5. Why does it take more energy to turn a solid into a liquid than to turn a liquid into a gas? A) Particles in a gas are held together more tightly. B) Particles in a solid move faster than in a liquid. C) Particles in a liquid are held together more tightly. D) Particles in a solid are held together more tightly. Show Answer Correct Answer: D) Particles in a solid are held together more tightly. 6. What does the ideal gas law equation $PV = nRT$ A) The relationship between pressure, volume, and temperature of a gas. B) The relationship between pressure and volume only. C) The relationship between volume and temperature only. D) The relationship between pressure and temperature only. Show Answer Correct Answer: A) The relationship between pressure, volume, and temperature of a gas. 7. What is the main difference between plasma and gasses? A) Plasma is spelled with a "P" while the "P" in gasses are silent. B) Plasma is good at conducting electricity while gasses tend not to. C) Plasma is hot while gasses aren't ever hot. D) There is no difference, they are both names for the same thing. Show Answer Correct Answer: B) Plasma is good at conducting electricity while gasses tend not to. 8. What does the symbol 'c' represent in the specific heat capacity formula? A) Specific heat capacity. B) Change in temperature. C) Heat energy. D) Mass. Show Answer Correct Answer: A) Specific heat capacity. 9. A hypothetical gas that perfectly fits all the assumptions of the kinetic molecular theory is known as A) Ideal gas. B) Perfect gas. C) Imaginary gas. D) Real gas. Show Answer Correct Answer: A) Ideal gas. 10. In terms of spacing, what is necessary to change from a liquid to a gas? A) No change. B) Increase in spacing. C) Decrease in spacing. D) Add heat. Show Answer Correct Answer: B) Increase in spacing. 11. What is the best definition for c A) The energy release when 1 kg of a substance changes in temperature by 1K. B) The change in temperature when 1000J are released rom a material. C) All the above. D) None of the above. Show Answer Correct Answer: A) The energy release when 1 kg of a substance changes in temperature by 1K. 12. Siti observes that she cannot compress a syringe filled with water, but she can do so when the same syringe is filled with air. This is because 1 the air molecules are farther apart than the water molecules.2 there are larger empty spaces between the air molecules compared to between the water molecules.3 the water molecules have weaker forces of attraction than air molecules A) 1 and 2 only. B) 2 only. C) 2 and 3 only. D) 3 only. Show Answer Correct Answer: A) 1 and 2 only. 13. Which of the following best describes the motion of particles in a liquid? A) They move in straight lines only. B) They move in circular paths only. C) They move randomly and are in constant motion. D) They do not move at all. Show Answer Correct Answer: C) They move randomly and are in constant motion. 14. A sample of oxygen occupies 47.2 liters under a pressure of 1240 Pa at 25$^{o}$C. What volume would it occupy at 25$^{o}$C if the pressure were decreased to 730 Pa? A) 80.2L. B) 29.3L. C) 47.8L. D) 27.8L. Show Answer Correct Answer: A) 80.2L. 15. Which of the following sentences are true about solids? A) Solids are rigid, have a fixed shape but not a fixed volume. B) Solids are not rigid, have a fixed shape and no fixed volume. C) Solids are rigid, have a fixed shape and a fixed volume. D) None of the above. Show Answer Correct Answer: C) Solids are rigid, have a fixed shape and a fixed volume. 16. At what temperature do nitrogen molecules move fastest? A) 200 K. B) 250 K. C) 350 K. D) 300 K. Show Answer Correct Answer: C) 350 K. 17. As gas particles increase, pressure A) Increases. B) Decreases. C) Doesn't change. D) None of the above. Show Answer Correct Answer: A) Increases. 18. What happens to the pressure of a gas if the volume of its container is decreased while the temperature remains constant? A) The pressure decreases. B) The pressure increases. C) The pressure remains constant. D) The pressure becomes zero. Show Answer Correct Answer: B) The pressure increases. 19. A sample of carbon-12 has a mass of 3.0 g. Which expression gives the number of atoms in the sample? (N$_{A}$$^{ }$ is the symbol for the Avogadro constant.) A) 0.0030 N$_{A}$. B) 4 N$_{A}$. C) 3 N$_{A}$. D) 0.25 N$_{A}$. Show Answer Correct Answer: D) 0.25 N$_{A}$. 20. Part of the Ideal Gas law states that all collisions are perfectly elastic, which means ..... A) The total kinetic energy remains the same. B) The particles gradually slow down over time. C) All the above. D) None of the above. Show Answer Correct Answer: A) The total kinetic energy remains the same. 21. How does pressure affect the particles in a liquid according to the kinetic theory? A) Increased pressure causes particles to ionize. B) Increased pressure makes particles move slower. C) Increased pressure makes particles move faster. D) Increased pressure has no effect on particle movement. Show Answer Correct Answer: C) Increased pressure makes particles move faster. 22. The positively charged particle that makes up the identity of an element is called what? A) Neutron. B) Proton. C) Positron. D) Electron. Show Answer Correct Answer: B) Proton. 23. Particles of liquids ..... A) Are free to flow around and past each other. B) Move fast in straight lines until they collide with each other or the container walls. C) Do not move at all. D) Vibrate in place. Show Answer Correct Answer: A) Are free to flow around and past each other. 24. Scientific unit for pressure A) Psi. B) Pounds. C) Pascal. D) MmHg. Show Answer Correct Answer: C) Pascal. 25. "Kinetic" refers to A) Heat. B) Motion. C) Density. D) Forces. Show Answer Correct Answer: B) Motion. 26. What is the significance of the root-mean-square speed in the kinetic theory of gases? A) It represents the speed of the fastest molecule. B) It represents the average speed of gas molecules. C) It represents the minimum speed of gas molecules. D) It represents the maximum speed of gas molecules. Show Answer Correct Answer: B) It represents the average speed of gas molecules. 27. How is the absolute scale of temperature measured? A) In degrees Celsius. B) In Kelvin. C) In Rankine. D) In degrees Fahrenheit. Show Answer Correct Answer: B) In Kelvin. 28. Gas laws involve what three variables? A) Elements Compounds Mixtures. B) Solid Liquid Gas. C) Pressure Temperature Volume. D) Speed Velocity Acceleration. Show Answer Correct Answer: C) Pressure Temperature Volume. 29. Gas particles have the ..... kinetic energy because they move the fastest. A) Least. B) Most. C) All the above. D) None of the above. Show Answer Correct Answer: B) Most. 30. What happens to the energy of a substance during a change of state according to the kinetic theory? A) Particles change color. B) Particles become larger. C) Energy is added or removed from a substance. D) Particles stop moving. Show Answer Correct Answer: C) Energy is added or removed from a substance. 31. Absolute zero refers to the temperature when what happens? A) Particles have no energy. B) Particles start to vibrate. C) Particles collide. D) Particles have maximum energy. Show Answer Correct Answer: A) Particles have no energy. 32. Discuss the application of molecular kinetic theory in real-life scenarios. A) Molecular kinetic theory has no practical use in understanding gas behavior. B) Molecular kinetic theory helps explain gas behavior, diffusion, osmosis, and material properties. C) Molecular kinetic theory is only applicable to solid materials. D) Molecular kinetic theory is limited to theoretical physics and has no real-world applications. Show Answer Correct Answer: B) Molecular kinetic theory helps explain gas behavior, diffusion, osmosis, and material properties. 33. Isolate M from pv = mRT/M A) M = pv/mRT. B) M = RT/pv. C) M = pv/RT. D) M = mRT/pv. Show Answer Correct Answer: D) M = mRT/pv. 34. The amount of energy needed to change a material from a liquid to a gas. A) Heat of Gas. B) Heat of Liquids. C) Heat of Vaporization. D) Heat of Fusion. Show Answer Correct Answer: C) Heat of Vaporization. 35. According to the kinetic theory, the temperature of a gas is directly proportional to the average ..... of its molecules. A) Potential energy. B) Velocity. C) Kinetic energy. D) Pressure. Show Answer Correct Answer: C) Kinetic energy. 36. For a mono atomic gas there are ..... degrees of freedom and the average total Kinetic Energy per molecule for any mono-atomic gas is ..... A) $3, \\frac{5}{2}k_BT$. B) $3, \\frac{3}{2}k_BT$. C) $5, \\frac{5}{2}k_BT$. D) $5, \\frac{3}{2}k_BT$. Show Answer Correct Answer: B) $3, \\frac{3}{2}k_BT$. 37. The ratio of isothermal bulk modulus to the adiabatic bulk modulus for a monoatomic gas is given by A) $1$. B) $\frac{3}{5}$. C) $1.4$. D) $\frac{5}{3}$. Show Answer Correct Answer: B) $\frac{3}{5}$. 38. How does the rate of diffusion change with an increase in temperature? A) Unaffected. B) Slower. C) Impossible to tell. D) Faster. Show Answer Correct Answer: D) Faster. 39. What could be the change when heat is supplied to a gas? A) The particles in the matter expand tremendously. B) The particles move randomly at all directions. C) The average kinetic energy of the particles increases. D) The particles contract and occupy lesser space. Show Answer Correct Answer: C) The average kinetic energy of the particles increases. 40. Which is not an assumption about gas particles in the kinetic theory model for a gas? A) They collide elastically with the container walls. B) They have negligible size compared to the distance between the container walls. C) They travel between the container walls in negligibly short times. D) They collide with the container walls in negligibly short times. Show Answer Correct Answer: C) They travel between the container walls in negligibly short times. 41. According to Boyle's Law, if the volume of a gas is halved, what happens to the pressure? A) It quadruples. B) It doubles. C) It halves. D) It remains the same. Show Answer Correct Answer: B) It doubles. 42. The real gases deviate from the ideal gas equation when the pressure increases. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 43. Which of the following is the measure of average kinetic energy of molecules? A) Pressure. B) Temperature. C) Heat energy. D) Volume. Show Answer Correct Answer: B) Temperature. 44. How does the motion of liquid molecules differ from that of gas molecules? A) Liquid molecules vibrate about fixed positions but gas molecules vibrate randomly. B) Liquid molecules vibrate about their fixed positions but gas molecules vibrate energetically. C) Liquid molecules rotate and vibrate randomly but gas molecules vibrate randomly and energetically. D) Liquid molecules move randomly but gas molecules move randomly at high speeds. Show Answer Correct Answer: D) Liquid molecules move randomly but gas molecules move randomly at high speeds. 45. From fastest to slowest rate of diffusion, which of the following is in the correct sequence? A) Liquids, gases, solids. B) Gases, liquids, solids. C) Gases, solids, liquids. D) Solids, liquids, gases. Show Answer Correct Answer: B) Gases, liquids, solids. 46. What role does kinetic energy play in the behavior of liquid particles? A) It keeps particles stationary. B) It causes particles to vibrate in place. C) It allows particles to move and flow. D) It prevents particles from moving. Show Answer Correct Answer: C) It allows particles to move and flow. 47. True or False:The molecules in a solid are fixed in place and do not move. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 48. When the temperature of a gas at constant volume is increased ..... A) The pressure of the gas increases. B) The pressure of the gas decreases. C) All the above. D) None of the above. Show Answer Correct Answer: A) The pressure of the gas increases. 49. When an ideal diatomic gas is heated at constant pressure, the fraction of the heat energy supplied which increases the internal energy of the gas is A) $\frac{3}{5}$. B) $\frac{2}{5}$. C) $\frac{5}{7}$. D) $\frac{3}{7}$. Show Answer Correct Answer: C) $\frac{5}{7}$. 50. Particles in a solid are tightly bound and ..... A) Are runny. B) Flow down a slope. C) Do not change relative position. D) Float in the air. Show Answer Correct Answer: C) Do not change relative position. 51. A gas is heated at constant pressure. The fraction of heat supplied used for external work is A) $\gamma-1$. B) $1-\frac{1}{\gamma}$. C) $\frac{1}{\gamma}$. D) $\gamma-\frac{1}{\gamma^2}$. Show Answer Correct Answer: B) $1-\frac{1}{\gamma}$. 52. The energy of an object as it is in motion is defined as A) Electric Energy. B) Potential Energy. C) Kinetic Energy. D) Elastic Energy. Show Answer Correct Answer: C) Kinetic Energy. 53. True or False:To make the molecules of a gas move faster and farther apart, you need to remove energy. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 54. In a solid the particles are A) Square. B) Bonded together strongly and vibrating around a fixed point. C) Close together and weakly bonded. D) Vibrating past one another at high speed. Show Answer Correct Answer: B) Bonded together strongly and vibrating around a fixed point. 55. A matter consisting of positive and negatively charged particles. Mostly like gas. A) Gas. B) Solid. C) Bose-Einstein Condensate. D) Liquid. E) Plasma. Show Answer Correct Answer: E) Plasma. 56. Change in temperature with respect to change in volume at constant internal energy is known as, A) Joule-Thomson Coefficient. B) Joule Coefficient. C) Thomson Coefficient. D) All the mentioned above. Show Answer Correct Answer: B) Joule Coefficient. 57. Particles have the most energy in which of the following states? A) Solid. B) Liquid. C) Gas. D) None of the above. Show Answer Correct Answer: C) Gas. 58. In the equation $pV=\frac{1}{3}Nm$ $\frac{1}{3}$ A) Molecules move in 4-dimensional space. B) Molecules move in 2-dimensional space. C) Molecules move in 1-dimensional space. D) Molecules move in 3-dimensional space. Show Answer Correct Answer: D) Molecules move in 3-dimensional space. 59. ..... is a measure of the average kinetic energy of the particles in an object. When temperature increases, the motion of these particles also increases. A) Measurement. B) Pressure. C) Temperature. D) None of the above. Show Answer Correct Answer: C) Temperature. 60. ..... is the process by which particles of matter fill a space because of random motion A) Condensation. B) Evaporation. C) Diffusion. D) Distillation. Show Answer Correct Answer: C) Diffusion. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Physics (Part Ii) Chapter 15 Kinetic Theory Quiz 1Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory Quiz 3Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory Quiz 4Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory Quiz 5Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory Quiz 6Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory Quiz 7Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory Quiz 8Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books