Thermodynamics TEST - IIT JAM MCQ

10 mole of ideal gas expand isothermally and reversibly from a pressure of 10 atm to 1 atm at 300 K. What is the largest mass which can lifted through a height of 100 meter?

For ideal gas which of the following relation is incorrect?

The efficiency of an ideal gas with adiabatic exponent ‘γ’ for the shown cyclic process would be:
.

An ideal gas is at pressure P and temperature T in a box, which is kept in vacuum with in a large container. The wall of the box is punctured. What happens as the gas occupies entire container?

Initially one mole of ideal gas  at 1.0 atm and 300 K is put through the following cycle:

.

Step – I : Heating to twice its initial pressure at constant volume.

Step – II : Adiabatic expansion to its initial temperature.

Step – III : Isothermal compression back to 1.00 atm.

What is the volume at state X?

Heat absorbed by a system in going through a cyclic process shown in figure is:

.

A heat engine carries one mole of an ideal mono-atomic gas around the cycle as shown in the figure. Select the correct option:

.

An oil bath kept at 27⁰C is being supplied heat at the rate of 100 js^-1. Assuming the process to be quasi-static, the rate of increase of entropy of the system is approximately.

An ideal gas is taken around the cycle ABCA as shown in P – V diagram. The net work done during the cycle is equal to:

For the following reaction.

CO₂ + H₂O →H₂CO₃

The entropy change was calculate to be -96 JK^-1 mol^-1. The enthalpy change  was measured to be -45kJ K^-1 mol^-1. This reaction is expected to be a spontaneous process. The total change in entropy is:

A heat engine absorbs 760 kJ of heat from a source at 380 K. it rejects

(i) 650 kJ                                                       (ii) 560 kJ

(iii) 504 kJ of heat to the sink at 280K state which of these represents respectively?

Which of the following statement is/are correct

For an isolated system, the entropy :

Select incorrect statement(s)

Which of the following relation is a correct for ideal gas:

Which of the following properties are characteristics of an ideal solution?

One mole of a substance is heated from 300 K to 400 K at constant pressure. The  of the substance is given by .The change in entropy, in of the substance is ________________

The Joule-Thomson Coefficient of carbon monoxide is at 298 K and 40.53 M Pa pressure, given that is 0.984, The Molar volume is 76 cm³ mol^-1 and C_pm = 37.28 Jk^-1 mol^-1 :(in K atm^-1)

How many show intensive property:

Dipole-moment, refractive index, viscosity, surface tension, gas constant, chemical potential, vapour pressure, critical density

The molar residual entropy of a crystal in which the molecules can adopt 6 orientations of equal energy at 0K is(in jk^-1mol^-1)

A sample of an ideal gas is expanded 1 m³ to 3 m³ in a reversible process for which P = KV² with K = 6 bar / m⁶. Work done by the gas is:(in KJ)

For C₆H₆(l), α = 1.24 × 10^-3 K^-1, and β = 9.228 × 10^-4 MPa^-1 at 298 K and 101.325 kPa pressure. Find the change in molar volume which will be required to produce an entropy change of 2.092 J K^-1 mol^-1 at 293 K. Assume α and β to be constants.(in cm³mol^-1)

One mole of a van der Waals gas undergoes a change from 298 K and 1dm³ to 373 K and 10 dm³. What is the change in its entropy? Given b = 0.06 dm³ mol^-1 , C_V,m = 29.0 J K^-1 mol^-1(in JK^-1mol^-1)

Calculate the entropy change at 373 K for the transformatiom

H₂O(l),( 1.01325 bar) = H₂O(g)( 0.101325 bar)

Given: Δ_vapH = 40.668 kJ mol^-1(Answer in JK^-1mol^-1)

The molar heat capacities of Iodine vapour and solid are 7.8 and 14 cal/mol respectively if enthalpy of sublimation of iodine is 6096 cal/mole at 200⁰C, then what is ?U (internal energy change) at 250⁰C in cal/mol

20.0 dm³ of an ideal gas (diatomic, C_vm = R) at 673K and 0.7 MPa expands until pressure of the gas is 0.2 M Pa. The Value of ΔH for the process if the expansion is carried out by adiabatic & reversible process.(in KJ)