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 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory Quiz 10 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the effect on gas particles when the temperature is lowered, according to the kinetic theory? A) The particles move more slowly. B) The particles move more quickly. C) The particles expand. D) The particles become charged. Show Answer Correct Answer: A) The particles move more slowly. 2. Subatomic particle with a charge of 0 A) Proton. B) Neutron. C) Electron. D) Quark. Show Answer Correct Answer: B) Neutron. 3. Freezing is ..... A) When a gas cools and goes from a gas to a liquid. B) When a solid warms and goes from a solid to a liquid. C) When a liquids cools and goes from a liquid to a solid. D) None of the above. Show Answer Correct Answer: C) When a liquids cools and goes from a liquid to a solid. 4. What would cause a decrease in particle movement? A) Decrease atoms. B) Decrease in temperature. C) Increase in space between atoms. D) Increase in mass. Show Answer Correct Answer: B) Decrease in temperature. 5. A measure of the average kinetic energy of the particles in a sample of matter. A) Temperature. B) Meter. C) Second. D) None of the above. Show Answer Correct Answer: A) Temperature. 6. Which of the following states of matter can easily be compressed (made to fit into a small volume)? A) Solid. B) Liquid. C) Gas. D) None of the above. Show Answer Correct Answer: C) Gas. 7. These will determine what element an atom is. A) Number of protons. B) Number of electrons. C) Number of atoms. D) Number of neutrons. Show Answer Correct Answer: A) Number of protons. 8. Define mean free path and its importance in gas behavior. A) Mean free path is the average distance a gas particle travels between collisions, important for understanding gas behavior. B) Mean free path refers to the speed of gas particles in a container. C) Mean free path is the time taken for gas particles to collide with each other. D) Mean free path is the total distance a gas particle travels in a vacuum. Show Answer Correct Answer: A) Mean free path is the average distance a gas particle travels between collisions, important for understanding gas behavior. 9. A physical change from gas to liquid is called ..... A) Sublimation. B) Expansion. C) Condensation. D) Evaporation. Show Answer Correct Answer: C) Condensation. 10. Very small particles of matter that make up protons and neutrons. A) Proton. B) Quark. C) Electron. D) Atom. E) Neutron. Show Answer Correct Answer: B) Quark. 11. The amount of energy required for the liquid at the correct temperature to become a gas. A) Heat of Vaporization. B) Boiling Point. C) Heat of Fusion. D) Freezing Point. E) Melting Point. Show Answer Correct Answer: A) Heat of Vaporization. 12. In which state of matter will there be the LARGEST space between molecules? A) Solid. B) Liquid. C) Gas. D) None of the above. Show Answer Correct Answer: C) Gas. 13. What is the difference between particles in a gas and a solid? A) Gas particles are closer together. B) Solid particles move faster than gas particles. C) Solid particles expand on heating. D) Gas particles have more kinetic energy than solid particles. Show Answer Correct Answer: D) Gas particles have more kinetic energy than solid particles. 14. Oxygen molecules at temperature T have the same r.m.s. speed as helium molecules at 300 K. What is the temperature T? A) 106 K. B) 600 K. C) 2400 K. D) 850 K. Show Answer Correct Answer: C) 2400 K. 15. Which of the following experiments can demonstrate Charles's Law? A) Heating a balloon and observing its expansion. B) Compressing a gas in a syringe and measuring pressure changes. C) Mixing two gases and observing the reaction. D) Cooling a gas and measuring its pressure. Show Answer Correct Answer: A) Heating a balloon and observing its expansion. 16. Energy of all molecules of a monatomic gas havinga volume V and pressure P is 3/2 PV . The total kinetic energy of all molecules of a diatomic gas at the sameVolume and pressure is A) 3PV. B) $\frac{PV}{2}$. C) $\frac{5}{2}PV$. D) $\frac{3}{2}PV$. Show Answer Correct Answer: C) $\frac{5}{2}PV$. 17. Between collisions with other particles and their container, gas particles ..... A) Travel fast in straight lines. B) Do not move at all. C) Travel in ever decreasing spirals. D) Have no energy. Show Answer Correct Answer: A) Travel fast in straight lines. 18. What is the definition of a particle? A) The smallest part of a substance that can be repeated to make the whole substance. B) The smallest part of an element that can exist. C) A substance that cannot be broken down into other substances. D) A force that joins atoms together in a substance. Show Answer Correct Answer: A) The smallest part of a substance that can be repeated to make the whole substance. 19. Which of the states of matter listed here have particles with the greatest kinetic energy? A) Gas. B) LIquid. C) Solid. D) Euphoria. Show Answer Correct Answer: A) Gas. 20. You and your friend share a bowl of hot soup. You use a plastic spork and she uses a metal spork. Which one will heat up faster? A) Her spork. B) Your spork. C) They will heat up the same. D) None of the above. Show Answer Correct Answer: A) Her spork. 21. Kinetic Theory states that the tiny particles in all forms of matter are ..... A) Constant motion. B) Constant curiosity. C) Constantly missing. D) None of the above. Show Answer Correct Answer: A) Constant motion. 22. If the atoms of an object are moving fast, the temperature would be ..... A) High. B) Low. C) All the above. D) None of the above. Show Answer Correct Answer: A) High. 23. What about gases can be measured? A) Pressure and Volume. B) Temperature, Volume, and Pressure. C) Volume and Temperature. D) Pressure, Temperature, Volume, and Moles. Show Answer Correct Answer: D) Pressure, Temperature, Volume, and Moles. 24. What is the major problem with trying to observe Brownian Motion? A) Molecules are moving too fast. B) Molecules are moving too slow. C) Molecules are too big to observe. D) Molecules are too small to observe. Show Answer Correct Answer: D) Molecules are too small to observe. 25. In an experiment, a gas is heated in a sealed container. What is the expected outcome according to the kinetic theory? A) The gas condenses into a liquid. B) The volume of the gas decreases. C) The gas particles stop moving. D) The pressure of the gas increases. Show Answer Correct Answer: D) The pressure of the gas increases. 26. The particles in a gas are ..... away from each other than the particles in a solid A) Farther. B) Closer. C) The same distance. D) None of the above. Show Answer Correct Answer: A) Farther. 27. Which of the following best explains the surface tension of liquids in terms of the Kinetic Theory? A) It is due to the random motion of particles. B) It is caused by the cohesive forces between particles. C) It is a result of particles moving in fixed patterns. D) It is unaffected by particle movement. Show Answer Correct Answer: B) It is caused by the cohesive forces between particles. 28. In which state of matter are the particles moving the least random A) Solid. B) Plasma. C) Gas. D) Liquid. Show Answer Correct Answer: A) Solid. 29. Explain the relationship between pressure and temperature in gases. A) Pressure is directly proportional to temperature in gases at constant volume. B) Pressure decreases as temperature increases in gases. C) Temperature has no effect on the pressure of gases. D) Pressure is inversely proportional to temperature in gases at constant volume. Show Answer Correct Answer: A) Pressure is directly proportional to temperature in gases at constant volume. 30. Particles that make up a solid have the ..... attraction toward each other. A) Strongest. B) Weakest. C) All the above. D) None of the above. Show Answer Correct Answer: A) Strongest. 31. Which of the following is true for Ideal Gases A) PV = nRT. B) PV = RT. C) None of the above. D) All of the above. Show Answer Correct Answer: A) PV = nRT. 32. Suppose the temperature of gas is tripled and N$_{2 }$molecules dissociate into atom. Then what will be the ratio of rms speed of nitrogen molecule to nitrogen atom? A) $\sqrt{6}$. B) $\frac{1}{\sqrt{3}}$. C) $\frac{1}{\sqrt{6}}$. D) $\sqrt{3}$. Show Answer Correct Answer: C) $\frac{1}{\sqrt{6}}$. 33. What is not true for an ideal gas? A) Gas molecules have primarily translational motion. B) Gas molecules do not occupy any volume. C) Gas molecules have forces of attraction for each other. D) Collisions between molecules do not involve the transfer of energy. Show Answer Correct Answer: D) Collisions between molecules do not involve the transfer of energy. 34. Particles always ..... each other, this gets stronger as the particles get ..... A) Attract, farther apart. B) Attract, closer together. C) Repel, closer together. D) Repel, farther apart. Show Answer Correct Answer: B) Attract, closer together. 35. The amount of energy needed to change a material from a solid to a liquid state. A) Heat of Solids. B) Heat of Vaporization. C) Heat of Fusion. D) Heat of Liquids. Show Answer Correct Answer: C) Heat of Fusion. 36. Particles in this state of matter do not move around a lot. A) Liquid. B) Solid. C) Plasma. D) Gas. Show Answer Correct Answer: B) Solid. 37. Is the statement true or false?Ethanol boils at 100 degrees C A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 38. Solids that melt at a specific temperature are called A) Fluids. B) Crystalline. C) Amorphorus. D) None of the above. Show Answer Correct Answer: B) Crystalline. 39. If 6L of gas at 293K is compressed to 4L, what is the new temperature? A) 0.082K. B) 12.2K. C) 439.5K. D) 195K. Show Answer Correct Answer: D) 195K. 40. At STP, 1 mol, or representative particles, of any gas occupies a volume of ..... A) 24.4 dm3. B) 44.2 dm3. C) 22.4 dm3. D) None of the above. Show Answer Correct Answer: C) 22.4 dm3. 41. What is the effect of increasing the number of gas molecules in a container on the pressure, assuming volume and temperature are constant? A) The pressure increases. B) The pressure remains constant. C) The pressure decreases. D) The pressure becomes zero. Show Answer Correct Answer: A) The pressure increases. 42. In what state of matter do particles spread out and fill their container? A) Solid. B) Liquid. C) Gas. D) None of the above. Show Answer Correct Answer: C) Gas. 43. The amount of energy needed to convert a solid into a liquid. A) Heat of Fusion. B) Heat of Vaporization. C) Melting Point. D) Boiling Point. Show Answer Correct Answer: A) Heat of Fusion. 44. Two cubes have identical volume, but one has a higher density. It is ..... A) Lighter. B) Softer. C) Rougher. D) Heavier. Show Answer Correct Answer: D) Heavier. 45. A liquid is able to flow because ..... A) Liquid molecules repel one another. B) Liquid molecules can move among one another throughout the liquid. C) Liquid molecules travel at high speeds. D) There are spaces between liquid molecules. Show Answer Correct Answer: B) Liquid molecules can move among one another throughout the liquid. 46. Which of the following statements best describes the Kinetic Theory of Gases? A) Gas particles are in constant random motion and exert pressure when they collide with the walls of their container. B) Gas particles are stationary and only move when heated. C) Gas particles are in constant motion and do not exert any pressure. D) Gas particles move in a uniform direction and speed. Show Answer Correct Answer: A) Gas particles are in constant random motion and exert pressure when they collide with the walls of their container. 47. In physics what quantity is given the symbol c ( in lower case letters)? A) Coulombs. B) Celcius. C) Charge. D) Specific heat capacity. Show Answer Correct Answer: D) Specific heat capacity. 48. Gas ..... particles have higher amounts of kinetic energy than when in the liquid state. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 49. At standard temperature and pressure the density of a gas is 1.3 g m-3 and the speed of the sound in gas is 330 m s-1. Then the degrees of freedom of the gas is A) 3. B) 5. C) 6. D) 4. Show Answer Correct Answer: B) 5. 50. Brownian motion shows that A) Particles in all states of matter are in constant, random motion. B) Particles in a fluid are in continuous, random motion. C) Particles in solids vibrate about fixed positions. D) Particles in gases are farther apart compared to in liquids. Show Answer Correct Answer: B) Particles in a fluid are in continuous, random motion. 51. Which of the following is NOT a part of the Kinetic Theory of Matter? A) All matter is made up of tiny particles. B) Occasionally, particles stop moving. C) Particles are always moving in random paths. D) The type of movement of particles depends on the amount of energy. Show Answer Correct Answer: B) Occasionally, particles stop moving. 52. The number of degrees of freedom of diatomic gas is A) 2. B) 3. C) 5. D) 4. Show Answer Correct Answer: C) 5. 53. Which of the following is a postulate of the kinetic theory of gases? A) Gas particles are in constant random motion. B) Gas particles attract each other. C) Gas particles have a fixed volume. D) Gas particles lose energy during collisions. Show Answer Correct Answer: A) Gas particles are in constant random motion. 54. In the context of kinetic theory, what does the term 'fluidity' refer to in liquids? A) The ability of particles to form a solid structure. B) The ability of particles to move past one another easily. C) The ability of particles to conduct electricity. D) The ability of particles to remain stationary. Show Answer Correct Answer: B) The ability of particles to move past one another easily. 55. No energy is lost when gas particles collide. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 56. Which of the following will diffuse the fastest? A) The smell of bacon cooking throughout a room. B) Heat through a solid piece of steel. C) A tablespoon of sugar in a glass of water. D) A pinch of salt in a glass of water. Show Answer Correct Answer: A) The smell of bacon cooking throughout a room. 57. HSO$_{4}$$^{-}$is an example of ..... ion. A) Monoatomic. B) Diatomic. C) Polyatomic. D) None of the above. Show Answer Correct Answer: C) Polyatomic. 58. Explain the concept of Brownian motion in relation to molecular kinetic theory. A) Brownian motion is a result of magnetic forces acting on particles in a fluid. B) Brownian motion is caused by the gravitational pull on particles in a fluid. C) Brownian motion only occurs in gases, not in liquids. D) Brownian motion is the random movement of particles suspended in a fluid due to collisions with the fluid molecules, as explained by molecular kinetic theory. Show Answer Correct Answer: D) Brownian motion is the random movement of particles suspended in a fluid due to collisions with the fluid molecules, as explained by molecular kinetic theory. 59. What is the variable for this number:22.7 L/mol? A) T. B) N. C) V. D) P. Show Answer Correct Answer: C) V. 60. Which of the following statements is true about the root-mean-square speed of gas molecules? A) It is independent of the mass of the molecules. B) It is inversely proportional to the pressure. C) It decreases with increasing temperature. D) It is directly proportional to the square root of the temperature. Show Answer Correct Answer: D) It is directly proportional to the square root of the temperature. ← 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 2Class 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books