JENPAS UG 2025 Thermodynamics Solved Questions for Physics Preparation

If you are studying for JENPAS UG 2025, Thermodynamics is a topic that you cannot avoid. It is also one of the most reliably scoring topics in Physics which features in the question paper each year. By knowing its basic concepts, you can comfortably tackle theoretical and numerical questions. The exam typically consists of application-based questions based on the laws of Thermodynamics, different processes, heat transfer, engines, refrigerators, and problem-solving questions related to them. Current JENPAS UG question analysis shows that a minimum of 6 to 8% of the Physics section deals with Thermodynamics, both conceptual and calculator MCQs combined. Working through key solved questions on Thermodynamics will be strongly beneficial and will improve your overall preparation for JENPAS UG 2025 .

Also Read: What is a Good Score in JENPAS UG 2025?

List of Thermodynamics Solved Questions for JENPAS UG 2025

Here are some important Thermodynamics solved questions that will help you ace your Physics preparation for the JENPAS UG 2025 exam:

Question 1: Two non-reacting gases A and B are taken in a mixture. What is total pressure?

Answer: Total pressure = partial pressure A + partial pressure B. (Dalton's Law of Partial Pressures)

Explanation: Dalton's Law explains that the total pressure is equal to the sum of partial pressures.

Question 2: How much energy is needed to vaporise 10 g of water at 100°C? (LV = 2260 J/g)

Answer: Energy = Q = mL = 10×2260 = 22600 J.

Explanation: Use mass and latent heat to calculate. (Latent Heat Calculation)

Question 3: What process (adiabatic or isothermal) results in faster cooling when a gas expands?

Answer: Adiabatic expansion results in faster cooling.

Explanation: During an adiabatic process, there is no heat transfer, and the temperature drops quickly. (Isothermal vs Adiabatic)

Check out more such solved questions on Thermodynamics for JENPAS UG 2025 in the PDF given below:

List of Important Thermodynamics Concepts for JENPAS UG 2025

While practising for Thermodynamics, emphasise the fundamentals and applications of it that are reiterated in competitive exams such as JEE or GATE. You must go through the following sections carefully:

• Practice questions for isothermal, adiabatic, isobaric, and isochoric processes, as well as their equations and applications.
• Relate gas laws with kinetic theory to allow the connection of microscopic behaviour with macroscopic characteristics.
• Delve into heat engines and the Carnot cycle, focusing especially on efficiency and work output for use in the real world, as many of the questions in exams compare real-world engines with the Carnot ideal.
• Explain the Zeroth, First, Second, and Third Laws of Thermodynamics and relish their applied use in gadgets and engines associated with energy.
• Solidify internal energy, specific heat, and molar specific heat concepts, as they are always examined with numerical questions.
• Revisit PV diagrams and work, energy relations, as graphical interpretation improves speed when solving numerical problems.
• Get ready to solve issues from work done, heat transfers, entropy, and efficiency calculations, since they carry enormous weightages in the exams.

Preparation Tips for Thermodynamics for JENPAS UG 2025

Read below some of the best tips to prepare for the Thermodynamics topic for JENPAS UG 2025:

• Start with revising basics and thermodynamic concepts from a good book/ coaching material. It will also provide you with time advantages during MCQs by making the definitions crystal clear.
• Practice and solve the questions, and then slowly shift to numerical questions. Solving the previous year question papers of JENPAS UG and other exams, like NEET/ JEE, can be of tremendous help, as question templates tend to overlap.
• Watch video lectures on YouTube to get fast shortcuts and fast-solving techniques.
• Make a short sheet of equations for processes, laws, and thermodynamic cycles.
• Make an effort to try 30 to 40 mixed questions a day. Test weak areas weekly to track progress.
• Practice PV, PT, and TS diagrams often. You must be correct in how they equate to heat and work.
• Participate in virtual discussion forums or test forums to share strategies, clarify misconceptions, and test weekly with other aspiring people.

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