CH-11 Heat & Thermodynamics Leave a Comment / By abdulslambsn@gmail.com / October 6, 2025 Welcome To Your Quiz "CH-11 Heat & Thermodynamics" Click on "Start Quiz" To Continue... 1. The degree of hotness or coldness of an object is called: Temperature Chemical energy Mechanical energy Heat None 2. The direction of the flow of heat between two bodies depends upon: Thermal conductivity Internal energies Temperature Specific heat None 3. A relationship between the mechanical work and heat energy has derived by: Joule Newton Kelvin Einstein None 4. The pressure exerted by the gas molecules on the walls of vessels due to: Continuous collision of its molecules Free motion of its molecules Momentum of its molecules All of above None 5. The value of Boltzman gas constant K is: 1.38 x 10⁻³⁴ J.K⁻¹ 1.38 x 10⁻²³ JK⁻¹ 1.38 x 10⁻³² J-K⁻¹ 1.38 x 10⁻²⁷ J . K⁻¹ None 6. Pressure of an ideal gas in terms of its density can be written as: P=pv² P=1/3 pv² P=2/3 pv² P=1/2 pv² None 7. In the average translational kinetic energy of the molecule show itself in the form of: Viscosity Density Velocity Temperature None 8. At constant temperature the volume of a gas is inversely proportional to the pressure is called: Charle's law Boyle's Heat law None of these None 9. Under the same conditions of temperature and pressure, equal volume of all gasses contains the same number of kilo moles is called: Charle's law Boyle's law Avogadro's law Law of pressure None 10. The value of universal gas constant R is: 8314 J / mole-K 83.10 j/mole-k 8314 J / K-mole K 8.314 J/K mole-k None 11. Add constant pressure the graph between volume and absolute temperature is: Parabola Straight line Hyperbola None of these None 12. For a gas obeying boyle's law if pressure is doubled, the volume of a gas becomes: One half No change Double None of these None 13. The pressure of a gas is directly proportional to: Root means square velocity of molecules Mean square velocity of the molecules Mean velocity of the molecules None of these None 14. If some quantity of water put in a shallow vessel allowed to evaporate, its temperature: Decreases Increases Remains constant None of these None 15. The internal energy of an ideal gas depends upon only on its: Pressure Volume Temperature All of above None 16. The sum of total energy of all the molecules of a substance is called: Heat energy Efficiency Internal energy Power None 17. The principles which deals with heat energy and its transformation into mechanical energy is called: Laws of thermodynamics Law of Conservation of Mass Law of conservation of energy First Law of Thermodynamics None 18. In thermodynamics, the change in the internal energy depends upon: The initial state of temperature only The final state of temperature only The initial and final states of temperature None of these None 19. The process under which the system undergoes a change of state at constant volume is called: Adiabatic process Isothermal process Isochoric process Isobaric process None 20. That process in which no heat enters or leaves the system is called: Isooric process Isothermal process Isobaric process Adiabatic process None 21. A system in which there is no transfer of mass and energy across the boundaries called: An isolated system An open system A closed system None of these None 22. The amount of heat required to raise the temperature of 1 KG of a substance through 1 ⁰C is called: Specific heat Molar heat capacity Heat of fusion All of above None 23. The difference between Cₚ and Cᵥ is equal to: Molar gas constant Boltzmann constant Universal gas constant None of these None 24. The amount of heat energy required to evaporize one KG of a liquid at its boiling without change of temperature is called: Heat of fusion Heat capacity Hate of vaporization Latent heat of vaporization None 25. A process which can be retraced in reverse order without produce any change in the environment is called: Irreversible process Reversible process Isothermal process Adiabatic process None 26. Which one is the example of reversible process: Compton Melting ice Heat engine Work done against friction None 27. An ideal heat engine has 100% percent efficiency only if its exhaust temperature: Less than input temperature Greater than input temperature Equal to input temperature OK None 28. The statement, It is impossible for a self- acting machine to transfer heat from a lower to higher temperature refers to: 1st Law of Thermodynamics Law of Conservation of Mass 2nd Law of thermodynamics None of these None 29. The efficiency of heat engine whose lower temperature is 17 ⁰C and the high temperature of 200 ⁰C is: 35 % 80 % 90 % 25 % None 30. An engine which convert heat energy into useful work up to 35% to 40% is: Petrol engine Heat engine Deisel engine Carnot engine None 31. In carnot engine at the end of cyclic path, the temperature working substance is: Zero Less than initial temperature Greater than initial temperature Equal to initial temperature None 32. The concept of entropy was introduced by the scientist: R Clausius Newton Kelvin Carnot Sadi None 33. Four stroke petrol engine has the following process: 1 4 2 3 None 34. The Centigrade and Fahrenheit scales will have the same reading when the temperature is: 70⁰ -80⁰ -40⁰ 120⁰ None 35. Mercury thermometer was constructed by: Rutherford Ampere Lord Kelvin Einstein None 36. A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called: Real gas Ideal gas Inert gas None of these None 37. If the volume of a given mass of a gas is doubled at constant temperature then the density of gas becomes: Remains constant Half Double None of these None 38. Which of the following does not have the same units: Work Heat Kinetic energy Power None 39. Consider volume in a cylinder is 4 c.c. If the position is kept fixed and gas is heated from 10 ⁰C to 15 ⁰C then the work done is: 4.3 J 20 J 15 J Zero None 40. Some gas at 300 K is enclosed in a container. Now the container is placed on a fast moving train. While the train is in motion, the temperature of the gas? Rises above 300 ⁰K Falls below 300 ⁰K Remains unchanged Becomes unsteady None 1 out of 8 Thanks For Taking This Quiz - Please See Your Answers/Results Below After Entering Your Name & Email... Name Email Time's up
