Thermodynamics Questions

The molar specific heats of an ideal gas at constant pressure and volume are denoted by CP and CV, respectively. If and R is the universal gas constant, then CV is equal to :...

During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its temperature. The ratio of Cp/Cv for the gas is :-...

The amount of heat energy required to raise the temperature of 1 g of Helium at NTP, from T1 K to T2 K is :-

A gas is taken through the cycle A → B → C → A, as shown, What is the net work done by the gas ?...

One mole of diatomic ideal gas undergoes a cyclic process ABC as shown in figure. The process BC is adiabatic. The temperatures at A, B and C are 400 K, 800 K and 600 K respectively. Choose the correc...

A monoatomic gas at a pressure P, having a volume V expands isothermally to a volume 2 V and then adiabatically to a volume 16 V. The final pressure ofthe gas is (take γ = )...

A gas mixture contain 1 gm. H2 and 1 gm. He if temp. of gas mixture increase 0oC to 100o C at isobaric process. Than find given heat of gas mixture[γHe = 5/3, γH2 = 7/5, R = 2 cal/molek]...

If amount of heat supplied is ᐃQ work done is ᐃW and change in internal energy is mCV dT. Than the relation among them is & (Cv = gm specific heat)...

The amount of work done in converting 1 gm ice at -10o C into steam at 100o C will be : -

The above p-v diagram represents the thermodynamic cycle of an engine, operating with an ideal monoatomic gas. The amount of heat, extracted from the source in a single cycle is :...

One mole of a monatomic ideal gas is taken along two cyclic processes E → F → G → E and E → F → H → E as shown in the PV diagram. The processes involved are purely ...

Helium gas goes through a cycle ABCDA(consisting of two isochoric and two isobaric lines) as shown in figure. Efficiency of this cycle is nearly (Assume the gas to be close to ideal gas) :-...

A Carnot engine, whose efficiency is 40% takesin heat from a source maintained at atemperature of 500 K. It is desired to have anengine of efficiency 60%. Then, the intaketemperature for the same exha...

5.6 liter of helium gas at STP is adiabatically compressed to 0.7 lit. Taking the initial temperaure to be T1, the work done in the process is

An ideal gas goes from state A to state B via three different processes as indicated in the P-V diagramIf Q1, Q2, Q3 indicate the heat absorbed by the gas along the three processes and ᐃU1, &#51...

Liquid oxygen at 50 K is heated to 300 K at constant pressure of 1 atm. The rate of heating is constant.Which one of the following graphs represents the variation of temperature with time?...

One mole of an ideal gas goes form an initial state A to final state B via two processes: It first undergoesisothermal expansion from volume V to 3V and then its volume is reduced from 3V to V at cons...

A thermodynamic system is taken through the cycle ABCDas shown in figure. Heat rejected by the gas during the cycleis...

Two moles of ideal helium gas are in a rubber balloon at 30oC. The balloon is fully expandable and can be assumed to require no energy in its expansion. The temperature of the gas in the balloon is sl...

A mass of diatomic gas (γ ) at a pressure of 2 atmospheres is compressed adiabati cally so that its temperature rises from 27oC to 927oC . The pressure of the gas in the final state is...