Work Done in Thermodynamic Processes
Calculate work done by or on a system during different thermodynamic processes, including isothermal, adiabatic, and against constant pressure, using P-V diagrams.
Why this shows up in the exam
Work calculations are a staple in competitive exams, often requiring careful attention to process type and conditions.
How NEET tests this
Practise it
These are real questions from past NEET papers that test this exact idea.
2 moles of ideal gas at 27 °C temperature is expanded reversibly from 2 lit. to 20 lit. Find entropy change. (R = 2 cal/mol K)
Push further
More challenging8 harder questions built from the past papers above — a step up in difficulty, with distractors designed so you can't get there by elimination. Written and checked by our reviewers, not from a real paper.
An ideal gas is compressed isothermally from 15 L to 5 L against a constant external pressure of 3.0 atm. Calculate the work done on the gas in Joules. (Given: 1 L atm = 101.3 J)
More from Thermodynamics
Thermodynamic Processes and P-V Diagrams
Study different thermodynamic processes (isothermal, isobaric, isochoric, adiabatic, polytropic, cyclic), their definitions, characteristics, and graphical representation on P-V diagrams.
Laws of Thermodynamics
Understand the zeroth and first laws of thermodynamics, including their statements, implications, and applications to physical systems.
Internal Energy, Heat, and Work
Explore the concepts of internal energy, heat, and work, including their definitions, relationships, and how they change during various thermodynamic processes.
Ideal Gas Law and Equation
Learn the ideal gas equation, its relation to physical quantities like pressure, volume, temperature, and density, and its use in describing the behavior of ideal gases.
Gibbs Free Energy and Spontaneity
Learn how Gibbs free energy determines spontaneity, how to calculate it, and its dependence on temperature, pressure, and other thermodynamic parameters.
Entropy and Its Changes
Understand entropy as a measure of disorder, how it changes in physical and chemical processes, and its calculation in various scenarios including phase transitions and isothermal processes.