Thermodynamic Laws Mock Tests

One mole of an ideal gas at 300 K expands isothermally from an initial volume of 10 litres to 20 litres. The work done by the gas is: (R = 8.314 J/(mol·K))

A Carnot engine operates between a hot reservoir at 500 K and a cold reservoir at 300 K. The efficiency of the engine is:

One mole of an ideal gas at 300 K expands isothermally from volume V to 10V. What is the work done by the gas? (Take R = 8.314 J/mol-K)

An ideal gas undergoes two processes: (A) isothermal expansion from volume V to 2V, and (B) adiabatic expansion from volume V to 2V. Both processes start from the same initial state. How do the magnitudes of work done compare?

One mole of an ideal diatomic gas (γ = 1.4) at 300 K undergoes an adiabatic expansion until its volume doubles. What is the final temperature? (2^0.4 ≈ 1.32)

A thermodynamic system undergoes a cyclic process ABCA. The work done by the system in one cycle is represented by the area enclosed in the P-V diagram. If the cycle is clockwise, the net work done by the system is:

An ideal gas undergoes an isothermal expansion at temperature T from volume V to volume 2V. The work done by the gas is: (n moles, R = gas constant)

An ideal gas undergoes an isothermal expansion at temperature T from volume V to 2V. The work done by the gas is: