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Worksheets12th session
Total questions: 70
Worksheet time: 35mins
The energy store in the substance or system is known as it's_______energy
internal
potential
kinetic
pressure
A change in the state of gas during which the pressure of the gas remains constant is called__change.
Adiabatic
isothermal
isobaric
isochoric
When there is no temperature difference between the part of system or between the system and it's surrounding then it is said to be in a state of____
electrical equilibrium
thermal equilibrium
chemaical equilibrium
mechanical equilibrium
A system which exchange both mass and energy with and its surrounding is called____
closed system
open system
isolated system
equilibrium system
The first law of thermodynamics is
PdV= RdT
Cp-Cv= R
P Vᵞ = CONST
dQ= dU+dW
The correct sequence of the processes taking place in a carnot cycle is
adiabatic- adiabatic-isothermal- isothermal
adiabatic- isothermal- adiabatic_ isothermal
isothermal-isothermal adiabatic -adiabatic
isothermal -adiabatic isothermal-adiabatic
All natural processes are_____
reversible
isothermal
irreversible
none of the above
The entropy of the universe is always tending towards
Minimum
zero
maximum
none of this
The term "thermodynamics" comes from the Greek words "therme" and "dynamis" which means_____
heat and power
heat and transfer
heat and energy
heat and motion
The term "thermodynamics" was first used in 1849 in the publication of
Randolph Clausius
William Rankine
Lord Kelvin
Thomas Savery
What is the more elaborate approach to the study of thermodynamics and base on the average behavior of the large groups of individual particle?
Dynamic thermodynamics
Static thermodynamics
Statistical thermodynamics
Classical thermodynamics
The first law of thermodynamics is based on which of the following principles?
Conservation of mass
Conservation of energy
Action and reaction
The entropy- temperature relationship
A system which consists of fixed amount of mass and no mass can cross its boundary is called____
equilibrium system
thermal equilibrium system
open system
closed system
Any characteristic of any thermodynamic system is called___
property
process
phase
cycle
How are thermodynamic s properties classified?
physical and chemical
intensive and extensive
real and imaginary
homogenous and heterogeneous
The thermodynamic properties that are independent on the size of the system is called .
extensive property
intensive property
open property
closed property
Which is NOT an intensive property of thermodynamics?
temperature
mass
pressure
density
What is a process with identical end states called?
cycle
path
phase
either path or phase
What is a process during which the pressure remains constant?
isobaric process
isothermal process
isochoric process
isometric process
The prefix "iso" used to designate a process means___
cannot be interchanged
remains constant
approximately equal
slight difference
The sum of all the microscopic form of energy is called____
total energy
internal energy
system energy
phase energy
Who coined the word "energy" in 1807?
William Rankine
Randolph Clausius
Lord Kelvin
Thomas Young
What refers to the portion of the internal energy of a system associated with the kinetic energies of the molecules?
translational energy
spin energy
rotational spin energy
sensible energy
What is the internal energy associated with the atomic bonds in a molecule called?
chemical energy
latent energy
phase energy
state energy
What are the only two forms of energy interactions associated with a closed system?
Kinetic energy andheat
heat transfer and work
thermal energy and chemical energy
latent energy and thermal energy
What states that if two bodies are in thermal quilibrium with a third body, they are also in thermal equilibrium with each other?
Zeroth Law of Thermodynamics
First Law of Thermo Dynamics
Second Law of Thermodynamics
Third Law of Thermodynamics
Who formulated the Zeroth Law of Thermodynamics in 1931?
Celsius
Einstein
H. Fowler
Fahrenheit
What is the thermodynamic scale in the SI system?
Kelvin scale
Celsius scale
Fahrenheit scale
Rankine scale
The temperature of the ideal gas temperature scale is measured by using a
constant-volume gas thermometer
constant-mass gas thermometer
constant-temperature gas thermometer
constant-pressure gas thermometer
What is the state at which all three phases of water coexist in equilibrium?
tripoint of water
triple-point water
triple-phase point of water
phase point of water
What is an energy that can be transferred from one object to another causing a change in temperature of each object?
power
heat transfer
heat
work
What is the SI unit of energy?
newton
BTU
Calorie
Joule
What is the study of energy and its transformation?
Thermostatic
Thermophysics
Thermochemistry
Thermodynamics
What is considered as the heat content of a system?
enthalpy
entropy
internal heat
molar heat
What refers to the amount heat needed to raise the temperature of an object by one degree Celsius of 1 K?
heat capacity
specific heat
latent heat
molar heat
When water exist in liquid phase and is not about to vaporize, it is considered as____liquid.
saturated
compressed or sub- cooled
superheated
unsaturated
What is the latent heat of fusion of water at 1 atm?
331.1 kJ/kg
332.6 kJ/kg
333.7 kJ/kg
330.7 kJ/kg
The term "enthalpy" comes from the Greek word "enthalpien" which means
warm
hot
heat
cold
If there is no heat transferred during the process, it is called
static
isobaric
polytropic
adiabatic
What is a measure of ability of a material to conduct heat?
specific heat capacity
coefficient of thermal expansion
coefficient of thermal conductivity
thermal conductivity
What refers to the rate of thermal radiation emitter per unit area of a body?
thermal conductivity
absorptivity
emissivity
emissive power
What is considered as a perfect absorber as well as a perfect emitter?
gray body
black body
real body
white body
The equation E (in) - E (out) = E (system) is known as
energy conservation
energy equation
energy balance
energy conversion principle
Thermal efficiency is the ratio of:
net work input to total heat input
net work output to total heat output
net work output to total heat input
net work input to total heat output
Which statement of the second law of thermodynamics states that no heat engine can have a thermal efficiency of 100%?
Kelvin-Planck Statement
Clausius Statement
Kevin Statement
Rankine Statement
Who proposed the Carnot cycle?
Sammy Carnot
Sonny Carnot
Sadi Carnot
Suri Carnot
Who discovered the thermodynamic property "entropy" in 1865?
Rudolf Clausius
Lord Kelvin
Sadi Carnot
James Joule
Entropy is transferred by
work
heat
energy
work and heat
Mixture of ice and water form a
closed system
open system
isolated system
heterogeneous system
Kelvin Planck's law deals with
conservation of heat
conservation of work
conversion of heat into work
conversion fo work into heat
Which of the following laws of thermodynamic which leads to the definition of entropy?
First law
Second law
Third law
Law of conservation of energy
The Science of Energy
Thermionics
Kinetics
Thermodynamics
Geophysics
It is an energy flux, equal to the rate of energy flow per unit area per unit time across some surface.
Irradiance
Radiant Intensity
Luminosity
Brightness
Occurs when the vapor pressure equals the atmospheric pressure
Boiling
Melting
Freezing
Vaporizing
The mechanical equivalent of heat is
joule
calorie
Btu
Specific heat
Which of the following best describes heat?
The capacity to do work
Forces times distances
Sum of thermal and chemical energy
An energy transfer due to temperature difference
Which of the following temperature scales doesn't have negative numbers?
Celsius
Kelvin
Reaumur
Fahrenheit
The average molecular kinetic energy of a gas depends on
Pressure
Volume
Temperature
Number of moles
A silver tea spoon is placed in a cup filled with hot tea. After some time, the exposed end of the spoon becomes hot even without a direct contact with the liquid. This phenomenon can be explained by
Thermal expansion
Conduction
Convection
Radiation
When we touch a piece of metal and a piece of wood that are placed in the same room, the piece of metal feels much colder than the piece of wood. This happens because of the difference in:
Specific heat
Temperature
Density
Thermal conductivity
Which mechanism of heat transfer is involved in heating a pot with water on a stove?
Convection
Conduction
Radiation
Induction
What is the primary focus of thermodynamics?
Heat transfer
Properties of matter
Energy transformations
Chemical reactions
Which law of thermodynamics states that energy spontaneously tends to disperse?
Zeroth Law
First Law
Second Law
Third Law
Heat flows spontaneously from:
A colder object to a hotter object
A hotter object to a colder object
An object at absolute zero to a hotter object
An object at absolute zero to a colder object
The second law of thermodynamics can be expressed mathematically as:
ΔE = q + w
ΔS = q/T
ΔG = ΔH - TΔS
PV = nRT
The third law of thermodynamics is concerned with the behavior of a system at:
Absolute zero
Room temperature
High pressure
Critical point
The third law of thermodynamics was formulated by:
Ludwig Boltzmann
Max Planck
Josiah Willard Gibbs
Walther Nernst
The third law of thermodynamics has important applications in which scientific field?
Astrophysics
Material science
Quantum mechanics
Biochemistry
Enthalpy is a thermodynamic property that represents:
The total energy of a system
The measure of disorder or randomness in a system
The heat capacity of a system
The heat content of a system at constant pressure
Entropy is often represented by the symbol:
H
S
G
U
