Description : A closed system is one in which (a) mass does not cross boundaries of the system, though energy may do so (b) mass crosses the boundary but not the energy (c) neither mass nor energy ... (d) both energy and mass cross the boundaries of the system (e) thermodynamic reactions take place.
Last Answer : Answer : a
Description : An isolated system is one in which (a) mass does not cross boundaries of the system, though energy may do so (b) neither mass nor energy crosses the boundaries of the system (c) both ... system (d) mass crosses the boundary but not the energy (e) thermodynamic reactions do not occur.
Last Answer : Answer : b
Description : An open system is one in which (a) mass does not cross boundaries of the system, though energy may do so (b) neither mass nor energy crosses the boundaries of the system (c) both energy ... system (d) mass crosses the boundary but not the energy (e) thermodynamic reactions do not occur.
Last Answer : Answer : c
Description : A classification of a system in which mass crosses its boundaries. a. Closed System b. Open System c. Isolated System d. None of the above
Last Answer : Open System
Description : A system which consists of fixed amount of mass and no mass can cross its boundary called _____. A. Equilibrium system B. Thermal equilibrium system C. Open system D. Closed system
Last Answer : Closed system
Description : A system having a rigid boundary that energy, work and mass does not cross its boundaries a. Specific Heat b. Specific Gravity c. Isolated System d. Enthalpy
Last Answer : Isolated System
Description : What do you call a system in which there is a flow of matter through the boundary? a. Closed system b. Open system c. Isolated system d. All of these
Last Answer : Open system
Description : Anything that is outside the system boundary is called ________. a. Surrounding b. Natural Environment c. Closed System d. Open System
Last Answer : Surrounding
Description : A system whose boundary does not allow the exchange of either matter or energy with the surrounding a. open system b. closed system c. isolated system d. none of the above
Last Answer : isolated system
Description : A system in which even energy is not allowed to cross the boundary is called ____. A. Closed system B. Exclusive system C. Isolated system D. Special system
Last Answer : Isolated system
Description : According to first law of thermodynamics (a) mass and energy are mutually convertible (b) Carnot engine is most efficient (c) heat and work are mutually convertible (d) mass and light are mutually convertible (e) heat flows from hot substance to cold substance.
Description : The first law of thermodynamics may be expressed in the following equivalent a. the net heat transfer id equal to the network b. the sum of the total energy forms leaving the system boundary is ... neither be created nor destroyed but only converted from one form to another d. all of the above
Last Answer : all of the above
Description : If a system after undergoing a series of processes, returns to the initial state then (a) process is thermodynamically in equilibrium (b) process is executed in closed system cycle (c) its entropy will ... sum of heat and work transfer will be zero (e) no work will be done by the system.
Last Answer : Answer : d
Description : The absolute pressure of a given mass of a perfect gas varies inversely as its volume, when the temperature remains constant. This statement is known as Charles’ law. A. Yes B. No
Last Answer : Answer: B
Description : What is the mass or region outside the system called? A. Surroundings B. Boundary C. Volume D. Environment
Last Answer : Surroundings
Description : If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly (a) temperature (b) enthalpy (c) internal energy (d) entropy (e) all of the above.
Description : _________ is a measure of the average kinetic energy per molecule in a substance. a. movement b. temperature c. heat d. mass
Last Answer : temperature
Description : The heat Q per unit mass per degree change in temperature that must be supplied or removed to change the temperature of a substance. a. Specific Heat Capacity b. Latent Heat c. Heat of Transformation d. Internal Heat
Last Answer : Specific Heat Capacity
Description : The ______ of a substance is the amount of heat that must be added or removed from a unit mass of the substance to change its temperature by one degree. A. Latent heat of fusion B. Molar heat C. Specific heat capacity D. Specific heat
Last Answer : Specific heat capacity
Description : What is defined as the energy required to raise the temperature of a unit mass of a substance by one degree? A. Latent heat of fusion B. Molar heat C. Specific heat capacity D. Specific heat
Last Answer : Specific heat
Description : _____ is that property of a substance which remains constant if no heat enters or leaves the substance, while it does work or alters its volume, but which increases or diminishes should a small amount of heat enter or leave. a. Entrophy b. Enthalpy c. Specific Heat d. None of the above
Last Answer : Entrophy
Description : What system in which there is no exchange of matter with the surrounding or mass does not cross its boundaries? a. Open system b. Closed system c. Isolated system d. Non-flow system
Description : Let a closed system execute a state change for which the heat is Q = 100 J and work is W = -25 J. Find E. ∆ (Formula: E = Q- W) ∆ a. 125 J b. 123 J c. 126 J d. None of the above
Last Answer : 125 J
Description : What are the only two forms of energy interactions associated with a closed system? A. Kinetic energy and heat B. Heat transfer and work C. Thermal energy and chemical energy D. Latent energy and thermal energy
Last Answer : Heat transfer and work
Description : What refers to a system in which there is a flow of mass across its boundaries? a. Open system b. Closed system c. Isolated system d. Non-flow system
Description : What system in which neither mass nor energy cross the boundaries and is not influenced by the surroundings? a. Closed system b. Open system c. Isolated system d. All of these
Description : A classification of system in which mass does not cross its boundaries. a. Nonflow System b. Open System c. Closed System d. None of the above
Last Answer : Closed System
Description : Open system is also known as _________. a. isolated system b. closed container c. control mass d. control volume
Last Answer : control volume
Description : A closed system is also known as _________. a. isolated system b. closed container c. control mass d. control volume
Last Answer : control mass
Description : A closed system may refer to ______. A. Control mass B. Control volume C. Control energy D. Control temperature
Last Answer : Control mass
Description : A system in which there is a flow of mass is known as _____. A. Equilibrium system B. Isolated system C. Open system D. Closed system
Description : Change in internal energy in a closed system is equal to heat transferred if the reversible process takes place at constant (a) pressure (b) temperature (c) volume (d) internal energy (e) entropy.
Description : Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant (a) pressure (b) temperature (c) volume (d) internal energy (e) entropy.
Description : For a thermodynamic process to be reversible, the temperature difference between hot body and working substance should be (a) zero (b) minimum (d) maximum (d) infinity (e) there is no such criterion.
Description : Work done in pushing a fluid across a boundary, Usually into or out of a system a. Flow Work b. Flow Energy c. Both a & b d. None of the above
Last Answer : Both a & b
Description : Gas is enclosed in a cylinder with a weighted piston as the stop boundary. The gas is heated and expands from a volume of 0.04 m^3 to 0.10 m^3 at a constant pressure of 200kPa.Calculate the work done by the system. A. 8 kJ B. 10 kJ C.12 kJ D.14 kJ Formula: W = p(V2-V1)
Last Answer : 12 kJ
Description : A gas is enclosed in a cylinder with a weighted piston as the top boundary. The gas is heated and expands from a volume of 0.04 m3 to 0.10 m3 at a constant pressure of 200 kPa. Find the work done on the system. a. 5 kJ b. 15 kJ c. 10 kJ d. 12 kJ
Description : What is a form of mechanical work which is related with the expansion and compression of substances? A. Boundary work B. Thermodynamic work C. Phase work D. System work
Last Answer : Boundary work
Description : The heating and expanding of a gas is called thermodynamic system. A. Yes B. No
Description : According to Avogadro's Hypothesis (a) the molecular weights of all the perfect gases occupy the same volume under same conditions of pressure and temperature (b) the sum of partial pressure of ... gases have two values of specific heat (e) all systems can be regarded as closed systems.
Description : Entropy is the measure of: a. The internal energy of a gas b. The heat capacity of a substance c. Randomness or disorder d. The change of enthalpy of a system
Last Answer : Randomness or disorder
Description : Sum of the internal energy of a substance and the product of pressure and volume. a. Specific Heat b. Specific Gravity c. Isolated System d. Enthalpy
Last Answer : Enthalpy
Description : What refers to the measure of the disorder present in a given substance or system? A. Enthalpy B. Entropy C. Heat capacity D. Molar heat
Last Answer : Entropy
Description : According to Kelvin-Planck's statement of second law of thermodynamics, A. it is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work B. it ... other than the transfer of heat from a cold body to a hot body D. none of the above
Last Answer : Answer: A
Description : A process, in which the temperature of the working substance remains constant during its expansion or compression, is called A. isothermal process B. hyperbolic process C. adiabatic process D. polytropic process
Description : The efficiency of a Carnot engine depends on (a) working substance (b) design of engine (c) size of engine (d) type of fuel fired (e) temperatures of source and sink.
Last Answer : Answer : e
Description : Carnot cycle efficiency depends upon (a) properties of the medium/substance used (b) condition of engine (c) working condition (d) temperature range of operation (e) effectiveness of insulating material around the engine.
Description : Liquid fuels have higher calorific value than solid fuels. A. Yes B. No
Description : The blast furnace gas is a byproduct in the production of pig iron in the blast furnace. A. Yes B. No
Description : The greater the pressure difference in throttling, the lesser is the irreversibility. A. Yes B. No