Three different processes that can occur in an ideal monoatomic gas are shown in the P vs V diagram. The paths are labelled as A → B , A → C and A → D . The change in internal energies during these process are taken as E A B , E A C and E A D and the work done as W A B , W A C and W A D . The correct relation between these parameters are:

E A B = E A C = E A D , W A B > 0 , W A C = 0 , W A D < 0

E A B = E A C < E A D , W A B > 0 , W A C = 0 , W A D < 0

E A B < E A C < E A D , W A B > 0 , W A C > W A D

E A B > E A C > E A D , W A B < W A C < W A D

A gas is filled in a box, which is moving with velocity v → . The internal energy of the gas will not include kinetic energy:

of box due to its translational motion.

of molecules due to translational motion.

of molecules due to rotational motion.

of molecules due to vibrational motion.

One calorie is defined as the amount of heat energy needed to raise the temperature of one gram of water by one degree Celsius at a pressure of one atmosphere. A calorie is a unit of measure of energy.

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What is an isolated system?

Important Questions on Thermodynamics

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Which of the following statement is incorrect

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Consider the given diagram. An ideal gas is contained in a chamber (left) of volume $V$ and is at an absolute temperature $T .$ It is allowed to rush freely into the right chamber of volume $V$ which is initially vacuum. The whole system is thermally isolated. What will be the final temperature, if the equilibrium has been attained?

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Pressure versus temperature graph of an ideal gas at constant volume $V$ is shown by the straight-line $A$ . Now mass of the gas is doubled and the volume is halved then the corresponding pressure versus temperature graph will be shown by the line

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

The pressure versus temperature graph of an ideal gas is shown in the figure below. If the density of gas at point $A$ is $ρ_{0}$ , then the density of the gas at point $B$ will be

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Three different processes that can occur in an ideal monoatomic gas are shown in the $P$ vs $V$ diagram. The paths are labelled as $A \to B, A \to C$ and $A \to D$ . The change in internal energies during these process are taken as $E_{A B}, E_{A C}$ and $E_{A D}$ and the work done as $W_{A B}, W_{A C}$ and $W_{A D}$ . The correct relation between these parameters are:

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

A balloon is filled at

27 ° C

and

1 atm

pressure by

500 m^{3}

He

. At

- 3 ° C

and

0.5 atm

pressure, the volume of

He

will be

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

A gas is filled in a box, which is moving with velocity

\vec{v}

. The internal energy of the gas will not include kinetic energy:

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Distinguish between heat and temperature?

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

A system is in a state of thermodynamical equilibrium, if:

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Define one calorie.

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Which of the following parameters does not characterize the thermodynamic state of matter?

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

The human body is an example of

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Which one of the following is not true in a thermodynamic process?

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Which one of the following is not a macroscopic variable of the gas (system) filled in a container?

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Some of the thermodynamic parameters are state variables while some are process variables. Some grouping of the parameters are given. Choose the correct one

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

If two systems are separated by a diathermic wall, the macroscopic quantity which is equal for two systems is:

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

Water of volume 2 litre in a container is heated with a coil of 1 kW at 27^oC. The lid of the container is open and energy dissipates at rate of 160 J/s. In how much time temperature will rise from 27^oC to 77^oC? [Given specific heat of water is 4.2 kJ/kg]

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

If an average person jogs, he produces

14.5 \times 10^{3} cal / \min

. This is removed by the evaporation of sweat. What will be the amount of sweat evaporated per minute?(assuming

1 kg

requires

580 \times 10^{3} cal

for evaporation).

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

The entropy of a perfectly crystalline material is zero at

0 K

. This statement matches with the-

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Physics>Heat and Thermodynamics>Thermodynamics>General Terms in Thermodynamics

The heat supplied to a system is used up entirely by the system in doing work on the environment during

What is an isolated system?

Important Questions on Thermodynamics

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