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Do or Die Chapter For JEE Mains 2026 - Some chapters always appear in the exam and contribute a major portion of the marks; such chapters are considered the real ‘Do or Die’ ones, as they keep repeating in previous year papers and play a crucial role in getting a good score. In this article, we provide a subject-wise list of do-or-die chapters, along with their preparation strategies, the JEE Mains 2026 exam pattern, and the types of questions asked. Read further to explore the complete subject-wise list of important chapters. JEE Main 2026 registration has already ended, and the last date was 27 November 2025. Session 1 is scheduled from 21 to 30 January 2026. This year, several changes have been made: dark mode has been enabled, font size has been adjusted, and screen zoom-in and zoom-out options have been added. No calculator is available and it is officially clarified by officials.
For JEE Main 2026 session 2, candidates who passed the Class 12 or equivalent examination in 2023 or earlier are not eligible to appear for JEE Main 2026 session 2. The passing year is counted as the year in which a candidate is declared ‘pass’ for the first time in Class 12. Subsequent attempts, subject additions, or improvement exams will not be considered as a fresh passing year for eligibility purposes.
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In JEE Mains 2026 physics often decides the score due to its mix of conceptual and numerical questions. Below are the top 7 high-weightage chapters in Physics that you must focus on for better accuracy and maximum marks
Physics | Weightage |
| 13.26% | |
Electrostatics | 10.74% |
Properties of Solids and Liquids | 9.05% |
| 6.53% | |
Magnetic Effects of Current & Magnetism | 6.32% |
Preparing Chemistry for JEE Mains 2026 becomes easier if you know the important topics and their weightage. Here’s a list of the do-or-die chapters that can help you maximize your score.
Chemistry | Weightage |
Coordination Compounds | 8.21% |
| 7.79% | |
Chemical Thermodynamics | 6.95% |
Organic Chemistry – Some Basic Principles and Technique | 6.32% |
Redox Reaction and Electrochemistry | 6.11% |
To boost your score in JEE Mains 2026 Mathematics, prioritize the topics that carry maximum weightage. Here are the most scoring chapters you should prioritize in your preparation.
Mathematics | Weightage |
Coordinate Geometry | 17.89% |
Integral Calculus | 10.74% |
Limit, Continuity and Differentiability | 8.84% |
Sets, Relations & Functions | 7.79% |
Sequence and Series | 7.37% |
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Follow these smart preparation tips given below to effectively cover the do-or-die chapters for JEE Mains 2026 and maximize your score.
Chapter Weightage Band | Preparation Strategy |
High Weightage (8–18%) | Treat these as Do or Die chapters. For JEE Mains 2026 - Prioritize in daily study schedule. - Revise NCERT + coaching notes thoroughly. - Solve at least the last 10 years’ PYQs. - Create formula/short notes for rapid revision. |
Moderate Weightage (5–8%) | These chapters can boost your score significantly. - Allocate alternate-day practice. - Revise concepts weekly. - Solve 30–40 targeted practice questions per chapter. - Use them for building accuracy and speed. |
Low Weightage (2–5%) | Attempt only after high/medium chapters are strong. - Focus on concept clarity (not depth). - Revise formulas and basic NCERT examples. - Practice 10–15 questions just for familiarity. |
Very Low Weightage (<2%) | Can be skipped if short on time. - If time permits, cover basics only. - Revise formula sheets, but don’t over-invest. |
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This table will give you a general knowledge of the JEE Mains Exam Pattern
Particulars | Details |
Exam Mode | Computer-Based Test (CBT) |
Papers | Paper 1 (B.E./B.Tech) |
Subjects | Physics, Chemistry, Mathematics |
Total Questions | 75 questions (25 per subject) |
Questions to Attempt | All questions are compulsory |
Type of Questions | MCQs (4 options with 1 correct) + Numerical Answer Type (NAT) |
Total Marks | 300 |
Marking Scheme | +4 for correct, –1 for incorrect (MCQ), and no negative marking for NATs |
Duration | 3 Hours (180 Minutes) |
Medium of Exam | 13 Languages (including English, Hindi, Gujarati, etc.) |
Frequently Asked Questions (FAQs)
On average there are 5 to 7 significantly important chapter from each subject.
No, they can significantly increase or break your marks but they themselves are not enough. You have to focus on other chapters too.
Do or die chapters for JEE Mains are the most important chapters with the highest weightage that can significantly affect your marks in JEE Mains.
On Question asked by student community
JEE Main 28 Jan shift 2 exam will end at 6 PM. The complete analysis and memory-based questions will solution will be updated in the below article. Keep checking the page-
Math and Chemistry was difficult and Physics was moderate. The complete analysis is available here- https://engineering.careers360.com/articles/jee-main-2026-january-28-shift-1-question-paper-with-solutions-pdf
You can also check the memory-based questions and detailed solutions for JEE Main Jan 28 shift 1 paper.
Hi Lucky,
Please refer to this link and you can download the free pdf.
HI Manisha Maharana
You can download the JEE Mains 10 Free Mock Test with Detailed solutions. Its a feely downloadable pdf.
https://engineering.careers360.com/download/sample-papers/jee-main-10-full-mock-test-and-explanations-pdf
Also, you can check ad attemp the online mock test on our platform.
https://learn.careers360.com/test-series-jee-main-free-mock-test/
A general equation of a circle is
$
x^2+y^2+2 g x+2 f y+c=0
$
Since it passes through $(0,0)$,
$
c=0
$
So the equation becomes
$
x^2+y^2+2 g x+2 f y=0
$
It cuts the x -axis at ( $a, 0$ ).
Substituting:
$
a^2+2 g a=0
$
g=-a/2
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