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Biophysics 02 - Subjects of Thermodynamics

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Quiz sobre Biophysics 02 - Subjects of Thermodynamics, criado por Peace Adefioye em 27-12-2018.
Peace Adefioye
Quiz por Peace Adefioye, atualizado more than 1 year ago
Peace Adefioye
Criado por Peace Adefioye quase 6 anos atrás
39
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Resumo de Recurso

Questão 1

Questão
A thermodynamics system is separated from the rest of the universe by a membrane, which delimits a finite volume and through which heat or other forms of energy may pass.
Responda
  • True
  • False

Questão 2

Questão
Regions outside the boundaries of the system are termed extra system
Responda
  • True
  • False

Questão 3

Questão
Homogeneous thermodynamic system has two or more phases, which are separated from one another by definite bounding surfaces.
Responda
  • True
  • False

Questão 4

Questão
An intensive variable is a physical quantity whose value depends on the amount of the substance
Responda
  • True
  • False

Questão 5

Questão
Changes in a thermodynamic system are often described by differentials of its state variables
Responda
  • True
  • False

Questão 6

Questão
Most thermodynamic equations are functions with several variables
Responda
  • True
  • False

Questão 7

Questão
For a given amount of substance temperature, pressure and volume are not independent from each other. They are connected by an equation of state.
Responda
  • True
  • False

Questão 8

Questão
Differentiation means finding slopes or the rate of change of one variable with respect to another
Responda
  • True
  • False

Questão 9

Questão
Small changes in a state function with several variables can be represented by a total differential. For this, all partial differentials of this function must be added.
Responda
  • True
  • False

Questão 10

Questão
Temperature and pressure are extensive variables
Responda
  • True
  • False

Questão 11

Questão
The total energy of the system and its surroundings is conserved
Responda
  • True
  • False

Questão 12

Questão
Energy may be extracted from an object from an object either by cooling, compression, or extraction of matter
Responda
  • True
  • False

Questão 13

Questão
A system is said to be in thermodynamic equilibrium when any of its properties such as temperature, pressure, colume etc. change with time
Responda
  • True
  • False

Questão 14

Questão
Each thermodynamic process is distinguished from other processes in energetic character, according to what parameters, such as temperature, pressure, or volume etc are held constant.
Responda
  • True
  • False

Questão 15

Questão
Reversible thermodynamic processes are processes, which develop so slowly as to allow each intermediate step to be an equilibrium state
Responda
  • True
  • False

Questão 16

Questão
Dissipative structures are stationary states with completely new qualities
Responda
  • True
  • False

Questão 17

Questão
Density is an intensive variable.
Responda
  • True
  • False

Questão 18

Questão
An isobaric process occurs at constant volume.
Responda
  • True
  • False

Questão 19

Questão
Thermodynamic systems possess energy, but not heat or work. Heat and work are transfer phenomena.
Responda
  • True
  • False

Questão 20

Questão
The pressure, temperature and chemical potential are the generalized forces, which drive the generalized changes in volume, entropy and particle number respectively.
Responda
  • True
  • False

Questão 21

Questão
Heat and work are not state variables
Responda
  • True
  • False

Questão 22

Questão
Force-displacement is a conjugate pair
Responda
  • True
  • False

Questão 23

Questão
dU represents an infinitesimal change in internal energy
Responda
  • True
  • False

Questão 24

Questão
A process during which there is no heat transfer is called an isothermal process.
Responda
  • True
  • False

Questão 25

Questão
The internal energy is an extensive property of a system while the internal energy per mole is an intensive state property of that system
Responda
  • True
  • False

Questão 26

Questão
Conjugate variables are sets of intensive and extensive variables whose product has the dimensions of energy.
Responda
  • True
  • False

Questão 27

Questão
A system is in a particular thermodynamic state when values of the properties of the system called as [blank_start]variables of state[blank_end] are known.
Responda
  • variables of state

Questão 28

Questão
There are three main types of systems: [blank_start]closed[blank_end], [blank_start]open[blank_end] and [blank_start]isolated[blank_end] systems.
Responda
  • closed
  • open
  • isolated

Questão 29

Questão
In open systems, [blank_start]matter[blank_end], [blank_start]energy[blank_end] and [blank_start]work[blank_end] may cross the boundary.
Responda
  • matter
  • energy
  • work

Questão 30

Questão
The variables of state are four in number: [blank_start]temperature[blank_end], [blank_start]pressure[blank_end], [blank_start]volume[blank_end], [blank_start]composition[blank_end].
Responda
  • composition
  • volume
  • pressure
  • temperature

Questão 31

Questão
A system is [blank_start]homogeneous[blank_end] when it has the same chemical composition throughout.
Responda
  • homogeneous

Questão 32

Questão
[blank_start]Thermodynamic state[blank_end] is defined as the instantaneous quantitative description of a system with a set number of variables held constant.
Responda
  • Thermodynamic state

Questão 33

Questão
In closed systems, [blank_start]energy[blank_end] cannot cross the boundary,
Responda
  • energy

Questão 34

Questão
Viscosity and specific heat are [blank_start]extensive[blank_end] variables.
Responda
  • extensive

Questão 35

Questão
Small changes in a state function with several variables can be represented by the so-called [blank_start]differential[blank_end].
Responda
  • differential

Questão 36

Questão
A system, in which all equalizing processes have gone to completion, is said to be in a state of [blank_start]thermodynamic equilibrium[blank_end].
Responda
  • thermodynamic equilibrium

Questão 37

Questão
An [blank_start]isentropic[blank_end] process occurs at constant entropy.
Responda
  • isentropic

Questão 38

Questão
Total differential of a function y=f(x) can be calculated from the product of [blank_start]the first derivative[blank_end] of the function and dx.
Responda
  • the first derivative

Questão 39

Questão
An [blank_start]extensive[blank_end] variable can be expressed as the sum of the quantities for the separate subsystems that compose the entire system.
Responda
  • extensive

Questão 40

Questão
An [blank_start]isobaric[blank_end] process occurs at constant pressure.
Responda
  • isobaric

Questão 41

Questão
A [blank_start]thermodynamic process[blank_end] is defined as the energetic progression of a thermodynamic system proceeding from an initial state to a final state.
Responda
  • thermodynamic process

Questão 42

Questão
Refractive index is a(n) [blank_start]extensive[blank_end] variable.
Responda
  • extensive

Questão 43

Questão
The most common conjugate thermodynamic variables are [blank_start]pressure-volume[blank_end]; [blank_start]temperature-entropy[blank_end]; [blank_start]chemical potential-particle number[blank_end].
Responda
  • pressure-volume
  • temperature-entropy
  • chemical potential-particle number

Questão 44

Questão
A system has three types of equilibrium: [blank_start]thermal[blank_end], [blank_start]chemical[blank_end] and [blank_start]mechanical[blank_end].
Responda
  • thermal
  • chemical
  • mechanical

Questão 45

Questão
An [blank_start]isothermal[blank_end] process occurs without loss or gain of heat.
Responda
  • isothermal

Questão 46

Questão
The properties of the system can be described by an equation of [blank_start]differentials[blank_end], which specifies the relationship between state variables.
Responda
  • differentials

Questão 47

Questão
Energy may be transferred into a body by [blank_start]heating[blank_end], compression, or addition of matter.
Responda
  • heating

Questão 48

Questão
Thermodynamic systems transfer energy as the result of a [blank_start]generalized force[blank_end] causing a generalized displacement, with the product of the two being the amount of energy transferred.
Responda
  • generalized force

Questão 49

Questão
Quantities describing the state of a system, such as internal energy, pressure, volume, temperature, and mass are called [blank_start]thermodynamic variables[blank_end].
Responda
  • thermodynamic variables

Questão 50

Questão
An idealized process that is carried out at constant temperature is called an [blank_start]isothermal process[blank_end].
Responda
  • isothermal process

Questão 51

Questão
The amount of heat transferred per unit time is called [blank_start]rate of heat[blank_end].
Responda
  • rate of heat

Questão 52

Questão
The work done per unit time is called [blank_start]rate of work[blank_end].
Responda
  • rate of work

Questão 53

Questão
In a closed system, the [blank_start]energy[blank_end] and chemical composition of the constituents remain constant.
Responda
  • energy

Questão 54

Questão
The word thermodynamics stems from two stems Greek words meaning:
Responda
  • conservation of heat
  • interactions of heat
  • study of heat
  • movement of heat

Questão 55

Questão
In thermodynamic processes, which of the following statements is NOT true?
Responda
  • In an isochoric process the pressure remains constant
  • In an isothermal process the temperature remains constant
  • In an adiabatic process the system is insulated from the surroundings

Questão 56

Questão
A process, in which the working substance neither receives nor gives heat to its surroundings during expansion or compression is called
Responda
  • isothermal process
  • hyperbolic process
  • adiabatic process
  • none of the above

Questão 57

Questão
Which of the following is NOT a state variable?
Responda
  • Work
  • Interal energy
  • Entropy
  • Temperature
  • Pressure

Questão 58

Questão
Heat flow is considered negative when heat flows [ ] a system; work is considered positive when work is done [ ] a system.
Responda
  • out of; by
  • into; by
  • out of; on
  • into; on

Questão 59

Questão
Because internal energy U is a state variable and depends only on the state of the system but not on how the system has achieved that state, we can write:
Responda
  • dU = 0
  • dU = U2 - U1
  • dU = Q + W
  • dU = U1 - U2

Questão 60

Questão
Which of the following laws of physics has become the foundation of thermodynamics?
Responda
  • Newton's laws of motion
  • the law of conservation of energy
  • the law of universal gravitation
  • the law of conservation of momentum

Questão 61

Questão
According to the laws of thermodynamics, all processes occuring in nature are
Responda
  • reversible and unidirectional
  • irreversible and unidirectional
  • reversible and bidirectional
  • irreversible and bidirectional

Questão 62

Questão
Which of the following is TRUE about thermodynamics?
Responda
  • It is based on the conservation principle
  • It deals with energy
  • It refers to direction of heat movements
  • All of the above

Questão 63

Questão
Which of the following are reversible process(es)?
Responda
  • Slow heating of water from a hot source
  • Constant pressure heating of an ideal gas from a constant temperature source
  • Evaporation of a liquid at constant temperature

Questão 64

Questão
Ice kept in a well insulated container is an example of which system?
Responda
  • a closed system
  • an isolated system
  • an open system
  • a diathermic system

Questão 65

Questão
Thermodynamic work is the product of
Responda
  • two intensive properties
  • two extensive properties
  • an intensive property and change and change in an extensive property
  • an extensive property and change in an intensive property

Questão 66

Questão
Which of the following is an intensive property?
Responda
  • Kinetic Energy
  • Gravitational potential energy
  • Pressure
  • Entropy

Questão 67

Questão
Pressure and volume are thermodynamic parameters. Their product is expressed in units [ ]
Responda
  • mass
  • energy
  • temperature

Questão 68

Questão
In an irreversible process, there is [ ]
Responda
  • no loss of mass
  • no gain of energy
  • gain of heat
  • loss of heat

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