Review Now


1. Which law describes the radiation emitted by an ideal body known as black body at thermal equilibrium?


2. What law of radiation states that when a material is in thermal equilibrium or in state of local thermodynamic equilibrium the emissivity and absorptivity becomes equal?


3. This law states more directly that a good absorber of radiation is also a good emitter of radiation at the same wavelength is the _______.


4. In order to convert the mole of a substance to atom, it requires a conversion factor of Avogadro’s constant equivalent to per one mole of a substance at _________.


5. The total number of atoms in a mole of any substance is determined by using a constant called _______.


6. The law which states that for a gas at constant temperature and pressure the volume is directly proportional to the number of moles of gas is _______.


7. The volume of a gas is determined not only by the pressure and volume but also by the quantity of gas when the quantity is given in mole, this relationship is known as ______.


8. At constant volume of a fixed gas, its pressure is directly proportional to the absolute temperature follows the law called __________.


9. Which of the following best describe a confined gas, where its volume is held constant then the pressure is directly proportional to the absolute temperature?


10. In a confined gas, if the absolute temperature is held constant, the volume is inversely proportional to the absolute pressure is given by ____.


11. The partial pressure is that pressure which a gas constituent would exert if a gas is existed alone at the mixture temperature and volume. This is statement is given by _______.


12. The relationship between the total pressure of a mixture of non-reacting gases and the partial pressure of constituents is given by _______.


13. The combined Boyle’s law and Charles’s law about gasses at low pressure PV = nRT is known as ideal gas or _______.


14. In thermodynamics and mechanics, what is the temperature at which speed of the fluid is zero and all of the kinetic energy has been converted to internal energy adiabatically?


15. When the velocity of the fluid at a given point is zero, hence the static pressure at that point is at maximum value, and then the temperature at this point is the _________.


16. In thermodynamics, when isentropic process takes place from the initiation to completion where the entropy of the system remains constant, this isentropic process is called ______.


17. Stagnation enthalpy is the enthalpy of a fluid at stagnation point, or it is the enthalpy of flow would possess if it is brought to rest ________.


18. Which one is considered when the entropy of the fluid does not change during entire process?


19. The kinetic energy of a fluid during stagnation process is converted into stagnation enthalpy which resulted to an ________.


20. The property of fluid at stagnation point refers to _______.


21. Which of these would best describes the first and second laws of thermodynamics?


22. The system condition that undergoes a thermodynamic process when there is some energy change within a system is best describes as _______. I.Has successive states through which the system passes II.When reversed leaves no change in the system III.When reversed leaves no change in the system or the surroundings IV.States are passes through so quickly that the surroundings do not change


23. Which of these listed below would give information of the number of proton in nucleus of an atom or the number of electrons in the orbit of an atom?


24. What is the curve showing the separation of the solid phase from the liquid phase in a P-T diagram of a pure substance?


25. Which of the listed below is NOT included in the property of an ideal gas?


26. All of the listed is a universal gas constant EXCEPT _______.


27. A form of energy which transfers among particles in a substance by means of kinetic energy of a substance is called _____.


28. What is the heat exchange of a body which has the sole effect to change the temperature of the body at the same phase state?


29. What is called the exchange of heat that is hidden meaning it occurs without a changing of the temperature of the body to change its phase?


30. If the temperature is held constant and the pressure is increased beyond the saturation pressure, then the working medium must be _______.


31. Which of the following whose pressure is higher than the saturation pressure corresponding to its temperature?


32. It is the point which the condition of pressure and temperature of a liquid and vapor are interchangeable refers to _____.


33. When the temperature falls below the critical temperature in a gaseous state, a substance is called a _______.


34. How does vapour behaves at superheated phase?


35. Steam at 2 kPa is saturated at 17.5 °C. In what state will the state be at 40 °C if the pressure is 2.0 kPa?


36. “It is impossible to construct an engine, which is operating in a cycle produces no other effect except to receive external heat from higher temperature and do equivalent amount of work, the above statements is known as ___________.


37. It is impossible for any device that operates on a cycle to receive heat from a single reservoir and produce net work is the statement of which of these law?


38. Which one states that “if two systems are at the same time in thermal equilibrium with a third system, the system is in thermal equilibrium with each other”?


39. Which law states that “the entropy of a perfect crystal of an element in its most stable form tends to zero as the temperature approaches absolute zero”?


40. The law which means that “as the thermodynamic temperature for pure perfect crystals approaches absolute zero, its entropy approaches a constant (this constant is zero)”?


41. “Energy will not flow from a low temperature to a high temperature object”, which law of thermodynamics describes this statement?


42. Heat will not flow spontaneously from a cold object to a hot object?86. Heat will not flow spontaneously from a cold object to a hot object?


43. Which of the following best describes the first law of thermodynamics?


44. The first law of thermodynamics for open system includes the following terms except the ______.


45. Which of the following statement is correct regarding compound steam engine?


46. Coefficient of contraction is defined as the ratio of _____________.


47. When a cylindrical vessel containing some liquid is rotated about its vertical axis, the liquid surface is depressed down at the axis of its rotation and rises up near the walls of the vessel on all sides. This type of flow is known as ________________.


48. A flow in which the viscosity of fluid is dominating over the inertia force is called __________.


49. The force exerted by a moving fluid on an immersed body is directly proportional to the rate of change of momentum due to the presence of the body. This statement is called __________.


50. In the law of mass and inertia, what is the formula to get the mass of the body?


51. In the law of mass and inertia, what is the relationship between mass of the body to momentum of the body?


52. Which of the following description is the similarity of both Stirling and Ericson engines?


53. Stirling and Ericson engines are similar because they are both considered __________.


54. What is the advantage of regeneration in both Stirling and Ericson cycle?


55. Which of these is correct for the same heat input and the same compression ratio?


56. If the product of pressure and volume is remains constant, what heat exchange process occurs?


57. Which of the following cycle can be thought as four different phases (expansion, transfer, contraction and transfer) having two isothermal and two constant volume processes?


58. Which of these statement best describes a Stirling cycle?


59. During which process the heat is added in Stirling engine?


60. During which process in an Otto engine where the heat is added?


61. The first law of thermodynamics states that the _________.


62. Which of the following is NOT true based on the first law of thermodynamics?


63. In an isobaric process, what is the equivalent value of pressure variation?


64. The amount of the work done for a closed, reversible, isometric system is equivalent to ________.


65. The enthalpy change of an ideal gas when compressed isothermally is _______.


66. At a temperature of absolute zero, what is the temperature of a pure substance?


67. For a closed system, which of the following is NOT included in the first law of thermodynamics?


68. Which of these is not depicting for real gas?


69. The significant of entropy is that when spontaneous change occurs in the system, it will be found that if the total entropy changes, its value obtained __________.


70. When an ideal gas is compressed in an insulated cylinder where there is no heat transfer, the temperature of the gas would _______.


71. The pressure is expressed in SI unit as __________.


72. A prefix “kilo” is used in some unit, what is the base unit with a prefix kilo?


73. The force exerted on a body by the influence of a gravitational field is the ________.


74. What is defined as the weight per unit volume?


75. The volume occupied by a unit mass of a substance is known as _______.


76. The following are dependent on the temperature and somewhat on the pressure of a fluid substance, they are density and ________.


77. With reference to the equation Cp = Cv + R, which of the following would apply to this formula?


78. What is the conversion of one chemical element or isotope into another?


79. What is the average air pressure at sea level is equivalent to the pressure produced by a column of about 76 cm mercury column?


80. The standard pressure value often expressed as 1013 millibar or it is about 1 kilogram per square centimeter is the standard _______.


81. The weight exerted by the overhead atmosphere on a unit area of surface is the _______.


82. The pressure of a system relative to the pressure of an absolute vacuum is the _______.


83. It is often expressed as the sum of the pressure of the atmosphere and the guge pressure of a fluid ________.


84. The pressure gauge is the pressure recording instrument which measures level of pressure, the pressure reading above atmospheric pressure is often called _____.


85. The pressure gauge is the pressure recording instrument which measures level of pressure, the pressure reading above atmospheric pressure is often called _____.


86. It is known as the energy of the molecules that cannot be measured, although a change in it can be measured is called ____.


87. The amount of heat released or absorbed by the chemical reaction at a constant pressure process is the _______.


88. The physical science which deals with the relationship and conversions between heat and other forms of energy is_________.


89. This involves the relations of heat, mechanical, electrical and other forms of energy work?


90. The ratio of NET work done during the cycle to swept volume is termed as ______.


91. Which of these correctly describes the term control volume?


92. If an initial volume of an ideal gas is compressed, the temperature increases twice and the volume are reduced to one-half from its original value, what will be its value of pressure?


93. The process during expansion or compression of the gas where in NO heat transfers occur from or to the gas, this is called ______.


94. In the polytropic process PV^n = Constant, if n = infinity then the process is equivalent to an isochoric process which is a/an _______. In the polytropic process PV^n = Constant, if n = infinity then the process is equivalent to an isochoric process which is a/an _______.


95. A thermodynamic process during which the volume of the closed system remains constant, the process is called _______.


96. It is a fundamental constant of physics, occurring in early every statistical formulation of both classical and quantum physics is the _______.


97. The ratio of the gas constant to the number of atoms in one mole of a substance is the ______.


98. A law that states the relation which describes the power radiated from a black body in terms of its temperature is known as ______.


99. A body radiates heat proportional to the fourth power of its absolute temperature is a description of ________.


100. What law which states that all substance emits radiation, the quantity and quality of which depends upon the absolute temperature and the properties of the material, composing the radiating body?


click here to take the assessment test