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JEE Main - Chemical Thermodynamics Important Questions (Free PDF Download)

Last updated date: 17th Apr 2024
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Download JEE Main Chemical Thermodynamics Important Questions with Solutions PDF: Score High Marks In JEE Main 2024

Vedantu provides a valuable resource for JEE Main 2024 in the form of strategically selected JEE Main Chemical Thermodynamics Important Questions, assembled with care by Vedantu's Master Teachers. They keep themselves informed about the latest trends to ensure the questions align perfectly with the JEE Main exam syllabus. These Chemical Thermodynamics important questions for JEE Main encompass multiple-choice questions (MCQs) and Integer Questions, allowing students to assess their skills at different levels. Supported by comprehensive solutions and explanations, the JEE Main Chemical Thermodynamics Important Questions PDF aids students in understanding the right strategies and methods. The PDF contains Previous Year Questions of Chemical Thermodynamics from JEE Main Exams, providing students with enough problem-solving skills for the upcoming exam. All these resources are free and can be easily accessed in PDF format for direct download from our website.


JEE Main Important Questions


Text, Images, Videos and PDF


JEE Main

Chapter Name:

Chemical Thermodynamics

Academic Session:



English Medium



Available Material:

Chapter-wise Important Questions with PDF

Students must consider Chemical Thermodynamics Important Questions for JEE Main PDF as a crucial resource because this chapter explains how energy changes occur during chemical processes. It covers concepts like heat, work, internal energy, enthalpy, and entropy, providing insights into the direction and spontaneity of reactions. 

You can understand the significance of Chemical Thermodynamics in JEE Main by checking the information in the table provided below.

Year wise Weightage of Questions: JEE Main Chemical Thermodynamics

Sl. No.


Average No. Of Questions Asked

Marks per Question

Total Marks





















To achieve your goals, prepare for your JEE Main Chemical Thermodynamics Important Questions with Vedantu’s PDF and JEE Main Chemistry Syllabus 2024.

Competitive Exams after 12th Science

JEE Main 2024: What to Focus in Chemical Thermodynamics?

A few topics in Chemical Thermodynamics will help you score in JEE Main 2024. Knowing the list of those topics will make it easy for you to prepare and focus on the JEE Main exam. You can check the list of important topics from the Chemical Thermodynamics below. Additionally, don't forget to explore the key concepts, fundamental theories, and vital formulas shaping your success in Chemical Thermodynamics for JEE Main 2024.

Furthermore, to excel in JEE Main 2024, you should also pay close attention to ‘Chemical Bonding and Molecular Structure Important Questions for JEE Main.’ These questions will help you strengthen your grasp of essential concepts and enhance your overall performance in the exam.

The important topics of Chemical thermodynamics for JEE Main are:

  • First Law of Thermodynamics

  • Enthalpy Changes

  • Hess's Law

  • Internal Energy

  • Second Law of Thermodynamics

  • Gibbs Free Energy

  • Entropy Changes

  • Thermochemical Equations

  • Standard Enthalpy and Entropy Changes

  • Spontaneity and Equilibrium

JEE Main Chemistry Important Questions: Explore Chapters with 2024 Links

Explore structured JEE 2024 Chemistry Important Questions through easily accessible chapter-wise links. Delve into crucial subjects, comprehend fundamental ideas, and enhance exam readiness. Equip yourself with an advantage using these targeted Important Questions.

Why Chemical Thermodynamics Important Questions are Essential In JEE Main Preparation? 

Chemical Thermodynamics chapter in JEE Main is not just theoretical concepts; they are the key to unlocking your potential. These topics hold substantial weightage in the exam, and understanding them thoroughly can significantly boost your scores, especially in Important Questions from Chemical Bonding and Molecular Structure for JEE Main. Here, we will delve into the importance of mastering this chapter and how it can empower you to excel in JEE Main.

Students delve into Chemical Thermodynamics not just for JEE Main preparation but to grasp the fundamental principles governing energy changes in chemical reactions. This vital subject equips them with the ability to predict spontaneity, equilibrium, and feasibility of chemical processes, a crucial skill for acing JEE Main exams.

The weightage of Chemical Thermodynamics in JEE Main exam is around 6-8%. This means that there are typically 3-4 questions asked from this chapter. Expect direct questions from this part, making it a scoring section. Let's explore why this chapter holds such importance:

Thermodynamic Processes: Understanding the Basics

A solid foundation in thermodynamic processes is essential for grasping Chemical Thermodynamics. You must familiarize yourself with various types of processes, including isothermal, adiabatic, isobaric, and isochoric. Understanding the characteristics and application of each process will help you comprehend complex thermodynamic concepts.

First Law of Thermodynamics: Conservation of Energy

The First Law of Thermodynamics states that energy can neither be created nor destroyed, only transferred or converted from one form to another. In the context of Chemical Thermodynamics, this law emphasizes the conservation of energy during chemical reactions. You must comprehend the concept of internal energy and its relationship with heat and work to solve problems efficiently.

Second Law of Thermodynamics: Entropy and Spontaneity

The Second Law of Thermodynamics plays a crucial role in Chemical Thermodynamics. It introduces the concept of entropy, which measures the degree of disorder in a system. Understanding entropy is essential in determining the spontaneity of reactions. By comprehending this law, you can predict the direction in which a reaction will proceed.

Enthalpy, Gibbs Free Energy, and Chemical Equilibrium

Enthalpy and Gibbs free energy are significant concepts for determining the feasibility and spontaneity of chemical reactions. Enthalpy represents the heat absorbed or released during a reaction, while Gibbs free energy indicates the energy available to do useful work. Furthermore, grasping the concept of chemical equilibrium and its relation to Gibbs free energy will enhance your problem-solving skills in Chemical Thermodynamics.

Hess's Law and Calorimetry: Heat Transfer in Reactions

Hess's Law allows you to determine the enthalpy change of a reaction by utilizing known enthalpy changes of related reactions. Calorimetry, on the other hand, involves measuring the heat transfer during chemical reactions. Mastering these topics will enable you to calculate heat changes accurately and solve complex problems in Chemical Thermodynamics.

Temperature Dependence and Reaction Kinetics

Temperature plays a crucial role in both thermodynamic processes and reaction rates. Understanding how temperature influences reactions is essential for comprehending reaction kinetics. Activation energy, which determines the rate of chemical reactions, is closely related to temperature. By studying temperature dependence, you will gain insights into the factors that affect the speed of reactions.

JEE Main 2024 Chemical Thermodynamics: Important Questions vs Formulas

JEE Main formulas are like the building blocks of success in the exam, and when combined with well-structured Important Questions, they become an indispensable tool for comprehensive understanding. When solving Chemical Thermodynamics Important Questions for JEE Main, make sure to use the associated formulas. Understand how the formula can be used while solving the Important Questions. This integration sharpens your understanding, reinforces memory, and develops problem-solving skills—critical aspects of excelling in JEE Main 2024. Download the Important JEE Main Physics Formula PDF for free from Vedantu’s website and score more in your JEE Main 2024 Examinations.

Next-Level Preparation: Supplemental Links for JEE Main 2024 Chemical Thermodynamics

These extra resources will elevate your preparation for JEE Main 2024 Chemical Thermodynamics. These links go beyond the basics to provide more learning materials. They're like stepping stones to higher understanding. As you delve into these supplementary links, you'll explore deeper aspects of the chapter. This added knowledge can help you solve complex problems and tackle challenging questions. These links are your secret tools to boost your confidence and excel in your exam. Check out the links in the table below and make your JEE Main 2024 Chemical Thermodynamics preparation to the next level.

Score Higher by Using Vedantu’s JEE Main Important Questions for Preparation

Chemical Thermodynamics Important Questions for JEE Main are essential for aspiring chemistry enthusiasts. This chapter is a fascinating branch of chemistry that helps us understand how energy flows in chemical reactions. Through our exploration, we've discovered key concepts like entropy, enthalpy, and Gibbs free energy, which are crucial in predicting whether a reaction will occur spontaneously or not. Vedantu's PDF of JEE Main Chemical Thermodynamics Important Questions has been a valuable resource, offering concise explanations and practice problems to help learners grasp these complex ideas. Armed with this knowledge, we can now better predict and control chemical reactions, making strides in various fields, from industry to environmental science.

JEE Mains PYQ Chapterwise: Mastering  Chemical Thermodynamics with Past Papers

Conquering JEE Mains requires unwavering dedication and strategic preparation. One invaluable tool in your arsenal is the treasure trove of previous year question papers (PYQs). But navigating those years of questions can be overwhelming, especially for a crucial chapter like  Chemical Thermodynamics. Enter JEE Mains PYQ Chapterwise: your key to targeted practice and exam mastery in this foundational subject.

By delving into JEE Main Chapter-wise PYQs for  Chemical Thermodynamics, you gain laser-sharp focus on specific topics within this crucial domain. Imagine tackling your weakest areas, with a targeted set of past questions, building confidence and competence one problem at a time.

Whether you prefer the convenience of a JEE Mains Previous Year Questions Chapter Wise for  Chemical Thermodynamics with PDF download or prefer working directly from online resources, the benefits are undeniable. You'll hone your problem-solving skills, learn to apply theoretical knowledge to real-world scenarios involving  Chemical Thermodynamics, and develop the exam temperament needed to excel under pressure, especially when faced with  Chemical Thermodynamics questions. Remember, these questions are like blueprints for future JEE Mains papers – studying them is like peeking into the exam itself!

So, unleash the power of JEE Main PYQ Chapterwise for  Chemical Thermodynamics. Download your chosen resources, pick your weakest topic within this chapter, and start practicing. Each solved question is a step closer to your JEE Mains dream. Remember, consistency is key! Make chapterwise PYQs for  Chemical Thermodynamics a daily ritual, and watch your confidence and competence soar as you approach the exam with a laser-sharp focus and a wealth of knowledge at your fingertips, ready to conquer even the most challenging topics in  Chemical Thermodynamics.

FAQs on JEE Main - Chemical Thermodynamics Important Questions (Free PDF Download)

1. What is Chemical Thermodynamics, and why is it important for JEE Main 2024?

Chemical Thermodynamics is the study of energy changes during chemical reactions and processes. It's crucial for JEE Main 2024 as it helps you understand the spontaneity and feasibility of chemical reactions, which are often tested in the exam.

2. What is the First Law of Thermodynamics, and how can I apply it to solve JEE Main 2024 questions?

The First Law states that energy cannot be created or destroyed, only converted from one form to another. In JEE Main 2024, you can apply it to solve problems involving heat, work, and internal energy changes in chemical systems.

3. What is the difference between exothermic and endothermic reactions, and why does it matter for JEE Main 2024?

Exothermic reactions release heat energy, while endothermic reactions absorb heat energy. This distinction is important in JEE Main 2024 as you may need to identify and analyze these types of reactions in various thermodynamics problems.

4. How can I calculate the change in enthalpy (ΔH) for a chemical reaction, and why is ΔH crucial for JEE Main 2024?

ΔH is calculated by subtracting the sum of the enthalpies of reactants from the sum of the enthalpies of products. It's vital for JEE Main 2024 because it helps determine whether a reaction is exothermic or endothermic, which is often a part of the exam.

5. What is Gibbs Free Energy (ΔG), and why is it used in JEE Main 2024 problems related to chemical thermodynamics?

ΔG combines both enthalpy (ΔH) and entropy (ΔS) to determine whether a reaction is spontaneous or non-spontaneous. It's essential for JEE Main 2024 as it helps predict the feasibility of chemical processes.

6. What is the significance of the equilibrium constant (K) in chemical thermodynamics, and how can I use it in JEE Main 2024 problems?

K represents the ratio of product concentrations to reactant concentrations at equilibrium. In JEE Main 2024, you may need to calculate and use K values to determine the direction of a reaction or predict equilibrium conditions.

7. What are Hess's Law and Kirchhoff's Law, and how can they be applied to solve JEE Main 2024 questions on chemical thermodynamics?

Hess's Law states that the enthalpy change for a reaction is the same, regardless of the reaction pathway. Kirchhoff's Law helps calculate enthalpy changes at different temperatures. Both are useful tools in JEE Main 2024 for solving enthalpy-related problems.

8. How can I prepare effectively for JEE Main 2024 Chemical Thermodynamics  important questions?

To excel in JEE Main 2024, focus on understanding the fundamental concepts of Chemical Thermodynamics, solve variety of problems, and familiarize yourself with common equations and principles like the First Law, Second Law, Gibbs Free Energy, and equilibrium. Additionally, review previous years' question papers to get a sense of the type and complexity of questions typically asked in the exam.