NTA has released the JEE Main 2026 Session 1 admit card. The exam is starting soon. Time is running out. But don't panic.

I analyzed the JEE Main April 2025 question paper. The results stunned me. Students who studied just 4 units scored 56 marks in a single shift. Yes, you read that right. Just 4 units. 56 marks.

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These are called "do or die" chapters. They are proven to be included in every JEE Main exam. They are easy to learn. They take less time. And they guarantee good marks.

These chapters are called "do or die" topics. They appear in every JEE Main exam. They are formula-based. And they don't require any complex calculations.

In this guide, I will share a complete list of sure-shot chapters for PCM. Master these topics and score 40+ marks with minimal effort. Let's get started.

👉 Also Check - Deleted Syllabus of JEE Mains 2026

The Proof: Analysis of JEE Main April 2025 Paper

I analyzed the JEE Main April 3, 2025 (Shift 1) question paper to see if this strategy actually works. The results were shocking.

Here is the breakdown from the April 2025 paper:

Real Example from 2025 Paper:

Question 26 in the Physics section simply asked students to add three masses (435.42 g, 226.3 g, and 0.125 g) using significant figures. That is 4 marks for basic addition!

👉 Also Check - JEE Main 2026 Chapter-wise Weightage

👉 Also Check - JEE Main Maths 2026 Chapter-wise Weightage & Topics

👉 Also Check - JEE Main Physics 2026 Chapter-wise Weightage & Topics

👉 Also Check - JEE Main Chemistry 2026 Chapter-wise Weightage & Topics

The Double-Benefit Chapters (Study Once, Score Twice)

Before you start random chapters, prioritize the "Double-Benefit" topics. These chapters appear in both Physics and Chemistry. Study them once and score in two sections.

1. Structure of Atom (Chemistry) & Modern Physics (Physics)

• The Hack: The concepts of Bohr's Model, Transitions, and Photoelectric Effect are identical in both subjects.
• Proof: In the 2025 paper, Question 52 in Chemistry asked about Bohr's model postulates. If you had studied Modern Physics, you could answer this Chemistry question easily.

2. Thermodynamics (Physics & Chemistry)

• The Hack: The laws and processes (Isothermal, Adiabatic) are the same in both subjects.
• Proof: The 2025 paper had questions on adiabatic compression in Physics (Q34) and Enthalpy changes in Chemistry (Q71).

Physics: The Sure-Shot List (Target: 20-24 Marks)

Physics is often feared, but these chapters are formula-based and require very little visualization. They are perfect for students who want quick marks.

Must-Do Topics in Physics:

• Significant Figures & Error Analysis (4-8 Marks guaranteed)
• Logic Gates: AND, OR, NAND, NOR (appears every session)
• Bohr's Model & Photoelectric Equation
• Variation of 'g' with height, depth, and rotation

Chemistry: The High-Scoring List (Target: 20-24 Marks)

In JEE Main 2025, Chemistry was the most scoring subject. Inorganic and Physical Chemistry offered easy calculations. NCERT is your Bible for Chemistry.

Must-Do Topics in Chemistry:

• Coordination Compounds: Hybridization (VBT), Magnetic Moment, Isomerism
• Chemical Bonding: MOT diagrams and Hybridization of molecules
• Biomolecules: Structures of Glucose, Fructose, and Vitamins (direct NCERT)
• Thermodynamics: Enthalpy, Entropy, Gibbs Energy calculations

Mathematics: The Sure-Shot Topics (Target: 36-40 Marks)

Mathematics is often considered the toughest subject. However, these 13 topics have contributed over 1000 questions in the last 5 years! On average, you can score 36-40 marks from these topics alone.

From the last 5 years analysis, on average, you can score 36-40 marks from these 13 topics. This translates to approximately 94 percentile!

Quick Summary: Expected Marks from Do-Or-Die Chapters

Best Resources for Preparation

For Chemistry:

NCERT is your Bible. In the April 2025 paper, the question on L-Fructose was a direct image from the NCERT textbook. Read every line for Inorganic Chemistry.

For Physics:

Don't overcomplicate easy chapters. Stick to coaching modules and Previous Year Questions. Solving last 5 years PYQs (2021-2025) is more valuable than thick theory books.

For Mathematics:

Practice is key. Focus on formulas and standard problem types. Chapter-wise PYQs help understand the pattern quickly.

Important Tips for Exam Day

1. Attempt Do-Or-Die chapters first: Secure your safety marks in the first 60-90 minutes.
2. Don't spend too much time on tough questions: Move on and come back later.
3. Use the 40 marks as foundation: This is your safety net, not your ceiling.
4. Trust your preparation: If you followed this strategy, you are ready.
5. Stay calm: Confidence matters more than last-minute cramming.

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