Thermodynamics ...

Which one of the following gases possesses the largest internal energy ?

Two samples A and B of a gas initially at the same pressure and temperature are compressed from volume V to V/2 (A isothermally and adiabatically). The final pressure of A is

A reversible engine converts one-sixth of the heat input into work. When the temperature of the sink is reduced by 62°C, the efficiency of the engine is doubled. The temperatures of the source and sink are

123. Find the change in the entropy in the following process 100 g of ice at 0°C melts when dropped in a bucket of water at 50°C (Assume temperature of water does not change)

A thermodynamic process is shown in the figure. The pressures and volumes corresponding to some points in the figure are : P_A = 3 × 10⁴ Pa, P_B = 8 × 10⁴ Pa and V_A = 2 × 10^–3 m³, V_D = 5 × 10^–3 m³. In process AB, 600 J of heat is added to the system and in process BC,200 J of heat is added to the system. The change in internal energy of the system in process AC would be

Four curves A, B, C and D are drawn in the adjoining figure for a given amount of gas. The curves which represent adiabatic and isothermal changes are

In pressure-volume diagram given below, the isochoric, isothermal and isobaric parts respectively, are

The P-V diagram of a system undergoing thermodynamic transformation is shown in figure. The work done on the system in going from A → B → C is 50 J and 20 cal heat is given to the system. The change in internal energy between A and C is

In the following indicator diagram, the net amount of work done will be

A cyclic process for 1 mole of an ideal gas is shown in figure in the V-T, diagram. The work done inAB, BC and CA respectively