EASY
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Which one of the following graphs is/are correct for isochoric process?

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Important Questions on Thermodynamics

MEDIUM

The pressure P versus temperature T plot of a cyclic process for an ideal gas is shown in the figure.

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The corresponding density ρ versus temperature T plot will be

MEDIUM
Which of the following is an equivalent cyclic process corresponding to the thermodynamic cyclic given in the figure? Where, 12 is adiabatic. (Graphs are schematic and are not to scale)
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MEDIUM

Thermodynamic process is shown below on a P-V diagram for one mole of an ideal gas. If V2=2V1, then the ratio of temperature T2T1 is :

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EASY

Thermodynamic processes are indicated in the following diagram.

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Match the following

Column – 1 Column - 2
P. Process I a. Adiabatic
Q. Process II b. Isobaric
R. Process III c. Isochoric
S. Process IV d. Isothermal
MEDIUM

For three low density gases A, B, C pressure versus temperature graphs are plotted while keeping them at constant volume, as shown in the figure

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The temperature corresponding to the point 'K' is:

EASY

One mole of an ideal diatomic gas undergoes a transition from A to B along a path AB as shown in the figure,

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The change in internal energy of the gas during the transition is:

EASY

The given diagram shows four processes i.e., isochoric, isobaric, isothermal and adiabatic. The correct assignment of the processes, in the same order is given by:
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EASY
A process in which the amount of heat supplied to the system goes fully to change its internal energy and temperature is
MEDIUM
Which of the following is not true about the process?
EASY
For a gas Cv= 4.96 cal mol-1 K-1, the increase in internal energy of 2 mol gas in heating from 340 K to 342 K will be:-
MEDIUM
In thermodynamic processes which of the following statement is not true?
HARD
28 g of N2 gas is contained in a flask at a pressure of 10 atm and at a temperature of 57°C. It is found that due to leakage in the flask, the pressure is reduced to half and the temperature to 27°C. The quantity of N2 gas that leaked out is
MEDIUM
70 cal of heat are required to raise the temperature of 2 mole of an ideal gas at constant pressure from 30 to 35. The amount of heat required to raise the temperature of the same sample of the gas through the same range at constant volume is nearly (Gas coristant = 1.99 cal K-1-mol-1)
EASY
The temperature of 5 moles of a gas which was held at constant volume was changed from 100ºC to 120ºC. The change in internal energy was found to be 80 J. The total heat capacity of the gas at constant volume will be equal to:-
EASY
Air is filled at 60°C in a vessel of an open mouth. The vessel is heated to a temperature T so that, 14th part of the air escapes. Assuming the volume of vessel remaining constant, the value of T is
HARD

The pair of isochoric processes among the transformation of states is

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MEDIUM
One mole of an ideal gas (CV=20 JK-1 mol-1) initially at STP is heated at constant volume to twice the initial temperature. For the process, W and q will be :
EASY

Pressure versus temperature graph of an ideal gas of equal number of moles of different volumes is plotted as shown in diagram. Choose the correct alternative.


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HARD

Two moles of CO2(g) at 300K has a volume of 16.1 L is supplied by 3 kJ of heat and temperature changed to 362.2K in a closed container.

[R=0.08 L atm mol-1 K-1, 1 L atm=0.1 kJ, b=0.05 L mol-1]

Then, which of the following statements are correct?