Thermodynamics Test

Result

Thermodynamics Test - 12

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

The first law of thermodynamics is based on the law of conservation of :

A
energy

B
mass

C
momentum

D
pressure

Solution

$$\textbf{Hint}$$: Use the concept of first law of thermodyanmics.
$$\textbf{Step}$$:
We know according to the first law of thermodynamics
$$\Delta Q=\Delta U+\Delta W$$
ie., heat supplied to a system is equal to the amount of work done by the system plus the increase in it's internal energy.
It is simply the law of conservation of energy applied to any system in which the energy transfer from or to the surroundings is taken into account.
Thus option A is correct.
Question 2
1 / -0

In isothermal expansion the pressure is determined by :

A
temperature only

B
compressibility only

C
both temperature and compressibility

D
latent heat

Solution

In isothermal expansion, the temperature remains constant over the process.

Thus, the pressure is only variable dependent on the volume or the compressibility of the system.
Question 3
1 / -0

A gas is being compressed adiabatically. The specific heat of the gas during compression is :

A
zero

B
infinite

C
finite but non zero

D
undefined

Solution

The specific heat of a gas is a material property, independent of the process it undergoes.
Question 4
1 / -0

During adiabatic expansion, the increase in volume is associated with

A
increase in pressure and temperature

B
decrease in pressure and temperature

C
increase in pressure and decrease in temperature

D
Decrese in pressure and increase in temperature

Solution

Increase in pressure will lead to decrease in volume and temperature in case of adiabatic process because of the following thermodynamic relations,
$$P \times V^{\gamma } = k$$
$$P^{1-\gamma } \times T^{\gamma } = t$$
where k ans t are constant.
Question 5
1 / -0

The process in which no heat enters or leaves the system is termed as :

A
isochoric

B
isobaric

C
isothermal

D
adiabatic

Solution

In a adiabatic process heat supplied to or exited from the system is zero.
Question 6
1 / -0

When an ideal gas expands isothermally, its internal energy will

A
increases

B
decreases

C
remains constant

D
becomes zero

Solution

Internal energy is a function of temperature only.
Therefore, in case of isothermal process, it will be constant.
Question 7
1 / -0

The process in which the internal energy of the system remains constant is :

A
adiabatic

B
isobaric

C
isochoric

D
isothermal

Solution

Internal energy is a function of temperature only.
Therefore, in case of isothermal process, it will be constant.
Question 8
1 / -0

For an isothermal process :

A
dQ= dW

B
dQ $$= $$ dU

C
dW$$= $$dU

D
dQ = dU + dW

Solution

Internal energy is a function of temperature only. Therefore, in case of isothermal process, it will be constant.

From $$ First \ Law \ of \ Thermodynamics $$, $$ dQ = dU + dW $$
and here, $$ dU = 0$$
So, $$dQ = dW$$
Question 9
1 / -0

The temperature at which adiabatic change is equivalent to the isothermal change ?

A
Zero degree celsius

B
Zero kelvin

C
Critical temperature

D
Above critical temperature

Solution

It is fundamental that at zero kelvin everything ceases to stop. Therefore adiabatic change will be equivalent to the isothermal change .
Question 10
1 / -0

In which of the following processes all three thermodynamic variables, that is, pressure, volume and temperature can change ?

A
Isobaric

B
Isothermal

C
Isochoric

D
Adiabatic

Solution

In isothermal process, temperature is constant.
In isochoric process, volume is constant.
In isobaric process, pressure is constant.
In adiabatic process, all three parameters can change.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Thermodynamics Test - 12

Result

Thermodynamics Test - 12

Score

-

Rank

-

SHARING IS CARING

Question 1

energy

mass

momentum

pressure

Solution

Question 2

temperature only

compressibility only

both temperature and compressibility

latent heat

Solution

Question 3

zero

infinite

finite but non zero

undefined

Solution

Question 4

increase in pressure and temperature

decrease in pressure and temperature

increase in pressure and decrease in temperature

Decrese in pressure and increase in temperature

Solution

Question 5

isochoric

isobaric

isothermal

adiabatic

Solution

Question 6

increases

decreases

remains constant

becomes zero

Solution

Question 7

adiabatic

isobaric

isochoric

isothermal

Solution

Question 8

dQ= dW

dQ $$= $$ dU

dW$$= $$dU

dQ = dU + dW

Solution

Question 9

Zero degree celsius

Zero kelvin

Critical temperature

Above critical temperature

Solution

Question 10

Isobaric

Isothermal

Isochoric

Adiabatic

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.