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 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What has to happen in order for a phase change to occur? A) Take away heat. B) Add heat. C) Either add or take away heat. D) None of the above. Show Answer Correct Answer: C) Either add or take away heat. 2. Is the statement true or false?Freezing and melting takes place at the same temperature. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 3. Which gas law is represented by the equation $PV = nRT$ A) Boyle's Law. B) Ideal Gas Law. C) Charles's Law. D) Avogadro's Law. Show Answer Correct Answer: B) Ideal Gas Law. 4. In the kinetic theory, which factor is responsible for the pressure exerted by a gas? A) The weight of the gas particles. B) The collisions of gas particles with the walls of the container. C) The volume of the gas. D) The color of the gas. Show Answer Correct Answer: B) The collisions of gas particles with the walls of the container. 5. Absolute Zero = ..... K or ..... C. A) -32, -273.15. B) 0, -273.15. C) 0, 273.15. D) 32, 237.15. Show Answer Correct Answer: B) 0, -273.15. 6. What phase is this describing?Has no definite shape, Has no definite volume, Particles move very quickly, Particles have weak forces between them A) Solid. B) Liquid. C) Gas. D) None!. Show Answer Correct Answer: C) Gas. 7. Between ice, water and steam, which is most easily compressed? A) Ice. B) Water. C) Steam. D) None of the above. Show Answer Correct Answer: C) Steam. 8. True or False?The particles in a liquid are travelling at very high velocities, allowing them to break the attractions between each other. This means particles can move through the liquid and hence a liquid's shape can change. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 9. Are particles of matter always in motion? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 10. True or False?In a solid, particles are usually shown packed closely together in very orderly planes. There are no spaced between the particles. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 11. What is Brownian motion? A) The oscillation of particles in a solid due to temperature changes. B) The uniform motion of particles in a gas without any external forces. C) The predictable path of a particle in a vacuum. D) Brownian motion is the random movement of particles in a fluid due to molecular collisions. Show Answer Correct Answer: D) Brownian motion is the random movement of particles in a fluid due to molecular collisions. 12. What happens when you heat a substance? A) The average kinetic energy of its particles increases. B) The average kinetic energy of its particles decreases. C) Some of its particles slow down so much that they go backwards. D) Every one of its particles increases speed by the exactly same amount. Show Answer Correct Answer: A) The average kinetic energy of its particles increases. 13. Root mean squared (r.m.s) speed of a gas molecules is directly proportional to ..... and inversely proportional to ..... A) Temperature ; molar mass. B) Molar mass ; temperature. C) Pressure ; temperature. D) Temperature ; pressure. Show Answer Correct Answer: A) Temperature ; molar mass. 14. When thermal energy is added to a substance, the substance's particles move: A) More rapidly at an increased distance from each other. B) More rapidly with less distance between each other. C) More slowly with a greater distance between each other. D) More slowly with a reduced distance between each other. Show Answer Correct Answer: A) More rapidly at an increased distance from each other. 15. When air in a hot air balloon is heated the air inside the baloon ..... A) Expands. B) Contracts. C) Evaporates. D) Condenses. Show Answer Correct Answer: A) Expands. 16. Particles are loosely packed. Can change position-has a definite volume, but takes the shape of its container. A) Solid. B) Bose-Einstein Condensate. C) Gas. D) Plasma. E) Liquid. Show Answer Correct Answer: E) Liquid. 17. A gas is taken in a sealed container at 300 K. it is heated at constant volume to a temperature 600 K. the mean K.E. of its molecules is A) Doubled. B) Quadrupled. C) Halved. D) Tripled. Show Answer Correct Answer: A) Doubled. 18. In terms of spacing, what is necessary to change from a solid to a liquid? A) Add heat. B) No change. C) Increase in spacing. D) Decrease in spacing. Show Answer Correct Answer: C) Increase in spacing. 19. The particles of ..... generally have the least amount of energy. A) Solids. B) Liquids. C) Gases. D) None of the above. Show Answer Correct Answer: A) Solids. 20. In kinetic theory what do we assume about collisions of gas particles? A) Constant. B) Electric. C) Inelastic. D) Elastic. Show Answer Correct Answer: D) Elastic. 21. In the kinetic theory of gases, what is the relationship between temperature and kinetic energy? A) Kinetic energy increases with temperature. B) Kinetic energy decreases with temperature. C) Kinetic energy is independent of temperature. D) Kinetic energy is inversely proportional to temperature. Show Answer Correct Answer: A) Kinetic energy increases with temperature. 22. What is the effect of increasing temperature on the kinetic energy of gas particles? A) Kinetic energy increases. B) Kinetic energy becomes zero. C) Kinetic energy decreases. D) Kinetic energy remains constant. Show Answer Correct Answer: A) Kinetic energy increases. 23. What does the kinetic theory state? A) All particles of matter are in constant motion. B) All particles of matter are in constant temperature. C) All the above. D) None of the above. Show Answer Correct Answer: A) All particles of matter are in constant motion. 24. The pressure of an ideal gas in a closed container is p, and the mean kinetic energy of the molecules is E. If the mean kinetic energy increase to 9E, what is the pressure of the gas? A) 27p. B) 3p. C) 81p. D) 9p. Show Answer Correct Answer: D) 9p. 25. Covalent bonds form between A) Metals. B) Nonmetals. C) Metal + nonmetal. D) Gases and liquids. Show Answer Correct Answer: B) Nonmetals. 26. The temperature of a liquid when its begins to form a crystal lattice is its ..... A) Melting point. B) Freezing point. C) Boiling point. D) Cooling point. Show Answer Correct Answer: B) Freezing point. 27. The property of a liquid that brings the molecules closer together. A) Surface tension. B) Viscosity. C) Amorphous. D) None of the above. Show Answer Correct Answer: A) Surface tension. 28. Adding heat to a liquid makes the particles move more quickly A) I agree with this statement. B) I do not agree with this statement. C) You cannot add heat to a liquid. D) None of the above. Show Answer Correct Answer: A) I agree with this statement. 29. A solid whose name comes from a Greek word meaning "without form." A) Plasma. B) Liquid crystals. C) Amorphous. D) Colloid. Show Answer Correct Answer: C) Amorphous. 30. ..... passing close to one another exert an attraction on each other. A) Real gas particles. B) Ideal gas particles. C) All the above. D) None of the above. Show Answer Correct Answer: A) Real gas particles. 31. What phase is this describing?Has a definite shape, Has a definite volume, Particles move very quickly, Particles have strong forces between them A) Solid. B) Liquid. C) Gas. D) None!. Show Answer Correct Answer: D) None!. 32. The temperature at which all molecular motion stops is A) -460 $^{.}$C. B) 0$^{.}$C. C) 0K. D) -273K. Show Answer Correct Answer: C) 0K. 33. Which of the following best describes the motion of particles in a gas according to the kinetic theory? A) Particles are fixed in place. B) Particles move in a zigzag pattern. C) Particles move in straight lines until they collide with something. D) Particles move in circular paths. Show Answer Correct Answer: C) Particles move in straight lines until they collide with something. 34. Which of the following is not a physical property of gases? A) High compressibility. B) Absence of definite volume. C) Large density. D) Fluidity. Show Answer Correct Answer: C) Large density. 35. If n and T are held constant, the ideal gas law reduces to A) Charles' law. B) Zero. C) Boyle's law. D) Avogadro's principle. Show Answer Correct Answer: C) Boyle's law. 36. On this temperature scale, "zero" represents the temperature at which molecules have the lowest energy possible A) Fahrenheit Scale. B) Celsius Scale. C) Kelvin Scale. D) None of the above. Show Answer Correct Answer: C) Kelvin Scale. 37. A student uses a microscope to observe pollen moving on the surface of water. Which statement describes the reason for this movement?0625/21/M/J/23 A) Pollen molecules are moved by water molecules. B) Microscopic pollen particles are moved by water molecules. C) Water molecules are moved by microscopic pollen particles. D) Water molecules are moved by pollen molecules. Show Answer Correct Answer: B) Microscopic pollen particles are moved by water molecules. 38. The solubility of gases in liquids can be decreased best by using- A) Lower temperature and pressure. B) Lower temperature and higher pressure. C) Higher temperature and pressure. D) Higher temperature and lower pressure. Show Answer Correct Answer: D) Higher temperature and lower pressure. 39. Convert 35 C to Kelvin A) 308 K. B) 300 K. C) 238 K. D) 35 K. Show Answer Correct Answer: A) 308 K. 40. Kinetic energy is what type of energy? A) Sound. B) Electric. C) Motion. D) Chemical. Show Answer Correct Answer: C) Motion. 41. The more energy particles have ..... A) The faster they move. B) The farther apart they tend to be. C) The hotter they are. D) All of the above. Show Answer Correct Answer: D) All of the above. 42. According to the kinetic theory, what is the main difference between the particles in a liquid and a gas? A) Particles in a liquid are more energetic than in a gas. B) Particles in a liquid are less energetic and more closely packed than in a gas. C) Particles in a liquid are more spread out than in a gas. D) Particles in a liquid are ionized while in a gas they are not. Show Answer Correct Answer: B) Particles in a liquid are less energetic and more closely packed than in a gas. 43. Which is the best summary of the kinetic theory? A) Potential energy is converted to kinetic energy. B) Atoms and molecules are always in motion. C) Energy cannot be created or destroyed. D) Atomic motion is constant at all temperatures. Show Answer Correct Answer: B) Atoms and molecules are always in motion. 44. Smallest particle of an element to retain it's qualtities. A) Electron. B) Proton. C) Atom. D) Neutron. E) Quark. Show Answer Correct Answer: C) Atom. 45. What are the units for measuring density of a solid? A) Grams. B) Newtons. C) G/cm$^{3}$. D) M/s$^{2}$. Show Answer Correct Answer: C) G/cm$^{3}$. 46. What role do collisions play in the molecular kinetic theory? A) Collisions cause molecules to interact and transfer energy. B) Collisions have no impact on molecular interactions. C) Collisions always result in the destruction of molecules. D) Collisions do not affect energy transfer between molecules. Show Answer Correct Answer: A) Collisions cause molecules to interact and transfer energy. 47. Absolute zero is defined as A) O$^{o }$Celcius. B) O Kelvin. C) 273.15$^{o}$ Celcius. D) 273.15 Kelvin. Show Answer Correct Answer: B) O Kelvin. 48. Select the statements that are correct for liquids. A) The particles move at low speeds. B) The particles are in fixed positions. C) The forces between particles are very strong. D) The particles can only vibrate. E) The particles are spaced far apart. Show Answer Correct Answer: A) The particles move at low speeds. 49. An ideal gas has a density of 2.0 kgm$^{-3}$ at a pressure of 2.2 x 10$^{5}$ Pa and a temperature of 295 K. Calculate the root mean square speed of the gas atoms. A) 19 ms$^{-1}$. B) 330 kms$^{-1}$. C) 373 ms$^{-1}$. D) 110 000 ms$^{-1}$. Show Answer Correct Answer: B) 330 kms$^{-1}$. 50. What is the variable for this number:25.7 g? A) M. B) N. C) T. D) P. Show Answer Correct Answer: A) M. 51. The average translational kinetic energy of O$_{2}$ (molar mass 32) molecules at a particular temperature is 0.048 eV. The translational kinetic energy of N$_{2}$ (molar mass 28) molecules (in eV) at the same temperature is A) 0.048. B) 0.003. C) 0.0015. D) 0.768. Show Answer Correct Answer: A) 0.048. 52. How do covalent bonds form? A) Opposite slight charges attract each other between compounds. B) Donating & receiving valence e-between atoms. C) Scientists are still not sure how they form. D) Sharing valence e-between atoms. Show Answer Correct Answer: D) Sharing valence e-between atoms. 53. Which of the following comparison between molecules in water and molecules in steam is correct? A) Water molecules are bigger. B) Greater forces between water molecules. C) Water molecules are further apart. D) Water molecules are heavier. Show Answer Correct Answer: B) Greater forces between water molecules. 54. What leads to a change of phase in matter? A) A change in the amount of kinetic energy. B) A change in the direction of particle movement. C) A change in the shape of the container. D) A change in the number of particles. Show Answer Correct Answer: A) A change in the amount of kinetic energy. 55. What is 50 C in Kelvin? A) 50. B) 323. C) 223. D) 100. Show Answer Correct Answer: B) 323. 56. Absolute zero is the temperature (in Kelvin), at which, only in theory ..... A) All particles stop moving. B) Time stands still. C) Space and time merge. D) Energy goes to infinity. Show Answer Correct Answer: A) All particles stop moving. 57. What is the average velocity of the molecules of an ideal gas? A) Constant. B) Zero. C) Unstable. D) Infinity. Show Answer Correct Answer: B) Zero. 58. Which of the following statements DOES NOT represent the ideal gas law? A) Pressure is directly proportional to the absolute temperature. B) Volume is directly proportional to pressure. C) Pressure is inversely proportional to volume. D) Volume is directly proportional to the absolute temperature. Show Answer Correct Answer: B) Volume is directly proportional to pressure. 59. The random motion of the particles in a substance is greatest when the substance is: A) Frozen. B) Liquid. C) Gas. D) Condensed. Show Answer Correct Answer: C) Gas. 60. Gases have a(n) ..... volume. A) Definite. B) Indefinite. C) All the above. D) None of the above. Show Answer Correct Answer: B) Indefinite. ← 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 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