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 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 15 Kinetic Theory Quiz 12 (16 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What does the symbol n represent in the ideal gas equation A) Number of molecules. B) Avogadro's constant. C) Number of moles. D) Molar mass. Show Answer Correct Answer: C) Number of moles. 2. Density is a measure of ..... A) Speed in a given distance. B) Distance in a given time. C) Distance in a given volume. D) Mass in a given volume. Show Answer Correct Answer: D) Mass in a given volume. 3. What is the term for the change of state from a gas to a liquid? A) Condensation. B) Evaporation. C) Freezing. D) None of the above. Show Answer Correct Answer: A) Condensation. 4. When the pressure if air in a balloon is increased by 2% by pumping air into the balloon, it is found that the number of moles of air in the balloon has increased by 5%, the thermodynamic temperature increased by 2%. By What percentage has the volume of the balloon changed? A) Decreased by 5%. B) Increased by 5%. C) Increased by 7%. D) Decreased by 3%. Show Answer Correct Answer: B) Increased by 5%. 5. The rate of energy transfer from a body by radiation is affected by a number of factors. What does not affect the rate of transfer? A) Colour of the surface. B) The surrounding air pressure. C) Surface temperature. D) Surface area. Show Answer Correct Answer: B) The surrounding air pressure. 6. Which of the following properties cannot be explained by the kinetic theory of particles? A) Density. B) Compressibility. C) Shape. D) Colour. Show Answer Correct Answer: D) Colour. 7. Find the ratio of specific heat capacity at constant pressure to the specific heat capacity at constant volume for NH$_{3}$. A) 1.28. B) 1.44. C) 1.67. D) 1.33. Show Answer Correct Answer: A) 1.28. 8. Particles within a solid A) Move about freely. B) Vibrate about fixed positions. C) Do not move. D) Exchange positions easily. Show Answer Correct Answer: B) Vibrate about fixed positions. 9. Adding heat to a solid makes the particles move ..... A) At the same rate as before the heat was applied. B) Faster. C) Slower. D) Particles in a solid are not moving. Show Answer Correct Answer: B) Faster. 10. Four students describe the phrase 'absolute zero' during a lesson on the particle model. Which student is correct? 0625/22/M/J/23 A) This is the lowest possible temperature. B) Particles have the least gravitational potential energy. C) Particles do not have any weight. D) Particles in a solid start vibrating. Show Answer Correct Answer: A) This is the lowest possible temperature. 11. Viscosity is defined as A) The amount of force divided by the area. B) The resistance of liquids to flow. C) A inward force or pull of a liquid. D) None of the above. Show Answer Correct Answer: B) The resistance of liquids to flow. 12. What are the units of pressure? A) Pa. B) Pi. C) Po. D) Pe. Show Answer Correct Answer: A) Pa. 13. What is the formula Charles' Law? A) V$_{1}$ / T$_{1}$ = V$_{2}$ / T$_{2}$. B) V = T. C) T$_{1 }$/ V$_{1 = }$T$_{2}$ / V$_{2}$. D) VT = VT. Show Answer Correct Answer: A) V$_{1}$ / T$_{1}$ = V$_{2}$ / T$_{2}$. 14. What must be the initial temperature of gas for achieving cooling effect in Joule-Kelvin expansion? A) The initial temperature must be above the maximum inversion temperature. B) The initial temperature must be below the maximum inversion temperature. C) The initial temperature must be equal to the maximum inversion temperature. D) The maximum inversion temperature has nothing to do with cooling effect in Joule-Kelvin expansion. Show Answer Correct Answer: B) The initial temperature must be below the maximum inversion temperature. 15. Choose the most appropriate phrase to complete the following statement.As the temperature of a gas increases, the gas molecules A) Move faster. B) Expand in volume. C) Increase in mass. D) Increase in number. Show Answer Correct Answer: A) Move faster. 16. Which of the following statements is a fundamental assumption of the kinetic theory of gases? A) Particles are in constant, random motion. B) Particles are stationary and fixed in place. C) Particles only move when energy is added. D) Particles do not collide with each other. Show Answer Correct Answer: A) Particles are in constant, random motion. ← PreviousRelated 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