This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory Quiz 6 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The temperature scale that we have to use when doing gas calcualtions is A) Celcius. B) Centigrade. C) Farenheit. D) Kelvin. Show Answer Correct Answer: D) Kelvin. 2. The particles in the liquid phase of a substance have ..... kinetic energy than the particles of that substance when they are in the solid phase. A) Same. B) Less. C) More. D) None of the above. Show Answer Correct Answer: C) More. 3. Which of the following statements are true regarding the kinetic molecular theory? A) Particles in gases have no energy. B) Particles in solids have no motion. C) Particles have volume. D) Particles are always in motion. Show Answer Correct Answer: D) Particles are always in motion. 4. The number of degrees of freedom of polyatomic gas is A) 3. B) 4. C) 5. D) 6. Show Answer Correct Answer: D) 6. 5. What happens to the pressure of a gas if its temperature is increased while keeping the volume constant? A) The pressure increases. B) The pressure decreases. C) The pressure remains constant. D) The pressure becomes zero. Show Answer Correct Answer: A) The pressure increases. 6. What is it called when a solid turns directly into a gas? A) Sublimation. B) Condensation. C) Liquid. D) Ionization. Show Answer Correct Answer: A) Sublimation. 7. Indicate which of these characteristics correspond to evaporation (E) and which correspond to boiling (B):It occurs at a given temperature A) Evaporation. B) Boiling. C) All the above. D) None of the above. Show Answer Correct Answer: B) Boiling. 8. At a given temperature, the specific heat of a gas at a constant pressure is always greater than its specific heat at constant volume. (True/False) A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 9. The attractive forces between the particles in a gas are: A) Strong. B) Weak. C) In-between. D) None of the above. Show Answer Correct Answer: B) Weak. 10. When gas particles collide with other particles, they ..... A) Travel in a random directions. B) Lose energy and slow down. C) Stop motion. D) Rebound elastically away from the other particle. Show Answer Correct Answer: D) Rebound elastically away from the other particle. 11. A piece of solid metal melts to become a liquid. How do the particles of metal or their behaviour change?0625/23/M/J/24 A) They increase in size. B) They move around each other. C) They move much further apart. D) They vibrate more about their fixed positions. Show Answer Correct Answer: B) They move around each other. 12. Solids have high densities because A) Particles are always in continuous and random motion. B) Particles are bigger than those in liquid and gas. C) Particles are closely packed together. D) Particles are smaller than those in liquid and gas. Show Answer Correct Answer: C) Particles are closely packed together. 13. Temperature is a measure of a substance's average A) Kinetic energy. B) Heat. C) Density. D) Electrostatic force. Show Answer Correct Answer: A) Kinetic energy. 14. When the motion of particles in the hotter part transfer their energy through vibrations to nearby ones it is what type of heat transfer ..... A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: A) Conduction. 15. What does root-mean-square velocity represent? A) It represents the total energy of particles in a gas. B) It indicates the temperature of the gas particles. C) It represents the average velocity of particles in a gas. D) It measures the pressure exerted by gas particles. Show Answer Correct Answer: C) It represents the average velocity of particles in a gas. 16. According to the Combined Gas Law, pressure and volume are inversely related which means that A) When pressure increases, volume increases. B) When pressure decreases, volume decreases. C) When pressure increases, volume decreases. D) When pressure doubles, volume triples. Show Answer Correct Answer: C) When pressure increases, volume decreases. 17. What are the units of relative molecular mass? A) G. B) Kg. C) No units. D) Amu's. Show Answer Correct Answer: C) No units. 18. According to Distribution Law, r.m.s speed is A) $\sqrt{\frac{3kT}{m}}$. B) $\sqrt{\frac{3kT}{m\pi}}$. C) $\sqrt{\frac{8KT}{m\pi}}$. D) $\sqrt{\frac{2kT}{m}}$. Show Answer Correct Answer: A) $\sqrt{\frac{3kT}{m}}$. 19. A gas occupies 4.98 L at 2.6 atm of pressure. What volume does it occupy at 1.8 atm pressure? A) 12.9 L. B) 0.72 L. C) 7.2 L. D) 3.44 L. Show Answer Correct Answer: C) 7.2 L. 20. Particles are tightly packed together, usually into geometric shapes. A) Bose-Einstein Condensate. B) Solid. C) Liquid. D) Gas. E) Plasma. Show Answer Correct Answer: B) Solid. 21. Which of the following is a real-world application of the kinetic theory of gases? A) Explaining the behavior of air in a car tire. B) Describing the motion of planets. C) Understanding the structure of solids. D) Analyzing the flow of electricity. Show Answer Correct Answer: A) Explaining the behavior of air in a car tire. 22. The temperature at which a phase change occurs turning a liquid into a solid. A) Melting Point. B) Boiling Point. C) Heat of Fusion. D) Heat of Vaporization. Show Answer Correct Answer: A) Melting Point. 23. Does a liquid need to be heated to a certain temperature in order to evaporate? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 24. State what is meant by the internal energy of a matter. A) It is the sum of kinetic energy of the particles. B) It is the sum of potential energy of the particles. C) It is the sum of kinetic and potential energy of the particles in random motion. D) It is the ratio of kinetic to potential energy of the particles. Show Answer Correct Answer: C) It is the sum of kinetic and potential energy of the particles in random motion. 25. According to the Kinetic Theory, what is the effect of increasing the number of gas particles in a container at constant volume and temperature? A) Pressure decreases. B) Pressure increases. C) Pressure remains constant. D) Pressure becomes zero. Show Answer Correct Answer: B) Pressure increases. ← PreviousNext →Related 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 7Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory Quiz 8Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory Quiz 9Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory Quiz 10Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books