Heat Transfer, Calorimetry and Thermal Expansion - 16 Problem types that can come in IIT JEE - JEE Main 2025

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We have started this video with weightage of the topics in JEE. Then we will jump into the Mind map of the chapter, so you know which topics and subtopics are covered in Heat chapter except KTG and thermodynamics chapter for IIT JEE - JEE Main and JEE Advanced, and how these are interlinked with each other. That helps you cover the entire chapter comprehensively and ensure you do not miss any single subtopic or concept from it.

Since the video has 3-4 questions from each of the 16 types of problems Heat, mostly from Past Year Questions of JEE Main, we are keeping 2 questions per type in the blog. We will add the list of the 16 problem types followed by 2 questions from each type.

We are going to systematically start with the weightage of the topic then go into the subtopics that need to be covered then go into more deeper points of what exactly there is in the syllabus using mind maps and ultimately come on to the 16 problem types.

Before we start this video there is a “do” and there is a “don't”. The “do” is do not watch this video like you are watching a movie but keep making notes, keep solving questions, pause the video and see how you can arrive on an answer and develop your approach while solving. The “don't” is that this video is not meant for a fresher student who has not just studies the chapter. We will not go into very basics but yes, I will tell you the concept wherever and whenever it is required.

Syllabus

Heat, temperature, thermal expansion, specific heat capacity, calorimetry, change of state, latent heat. Heat transfer: conduction, convection and radiation.

Mindmap of the chapter – Calorimetry, Heat Transfer and Thermal Expansion

Problem Types discussion

When two substances at different temperatures are mixed together, then exchange of heat continues to take place till their temperatures become equal. This temperature is then called final temperature of mixture. Here, Heat taken by one substance  Heat given by another substance

A bimetallic strip consists of metals A and B . It is mounted rigidly as shown. The metal A has higher coefficient of expansion compared to that of metal B. When the bimetallic strip is placed in a cold both, it will :

(1) Bend towards the right
(2) Not bend but shrink
(3) Neither bend nor shrink
(4) Bend towards the left

We hope you enjoyed this blog as well as the video, in which we went into the details of different kinds of problems that can be formed from Heat chapter in JEE Main, and how to solve them.

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All the best for your JEE Main 2025.