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qUESTIONS

If the ratio of specific heat of a gas at constant pressure to that at constant volume is γ, the change in internal energy of a mass of gas, when the volume changes from V to 2V constant pressure p, is

Which of the following gases possesses the largest internal energy?

If a system undergoes contraction of volume, then the work done by the system will be

The P-V diagram shows seven curved paths (connected by vertical paths) that can be followed by a gas. Which two of them should be parts of a closed cycle if the net work done by the gas is to be at its maximum value

A thermodynamic process is shown in the figure. The pressures and volumes corresponding to some points in the figure are: PA=3×10^4 Pa, PB=8×10^4 Pa and VA=2×10^-3m³, VD=5×10^-3m³. 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

First law of thermodynamics is a special case of

Which of the following statements is correct for any thermodynamic system?

A thermally insulated rigid container contains an ideal gas heated by a filament of resistance 100 Ω through a current of 1A for 5 min then change in internal energy is

A system goes from A to B via two processes I and II as shown in figure. If ΔU₁ and ΔU2 are the changes in internal energies in the processes I and II respectively, then

100g of water is heated from 30°C to 50°C ignoring the slight expansion of the water, the change in its internal energy is (specific heat of water is 4184 J/kg/K)

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