Most Ignored but High-Weightage Topics in JEE Main Chemistry - Don't Skip These

Most Ignored but High-Weightage Topics in JEE Main Chemistry - Don't Skip These

Shivani PooniaUpdated on 20 Nov 2025, 04:14 PM IST

Most ignored but high-wiehgtage topics in JEE Main chemistry are those topics which have a very high weightage and have lots of questions asked from them every year, but students consistently ignore them. In this article, we will understand which topics are and why they are ignored. Chemistry, out of the three subjects of JEE Mains, is the easiest and considered the most scoring. So naturally, toppers score their highest marks in Chemistry. To be able to score the best, it is important not to ignore the important topics. But surprisingly, there are many topics that have high weightage but are still ignored by students. In this article, we shall dive into those JEE Main Chemistry topics so you don't make the same mistake. Let's dive into the most ignored but high weightage topics in JEE Main 2026 Chemistry.

This Story also Contains

  1. Most ignored but high weightage topics in JEE Main Chemistry - That Gave Easy Marks
  2. JEE Main 2026: How We Found These Ignored but Important Chapters?
  3. JEE Main 2026: How to Revise These Topics in Less Time?
Most Ignored but High-Weightage Topics in JEE Main Chemistry - Don't Skip These
Most ignored but high-weightage topics in JEE Main Chemistry

Most ignored but high weightage topics in JEE Main Chemistry - That Gave Easy Marks

Now, let's go through these most ignored topics in JEE Main 2025 Chemistry, which were also high weightage topics in JEE Main 2025 Chemistry. These are the topics that were expected to be scoring and easy, but due to underestimation of their level of difficulty, they were also the most ignored ones. The data we have given here combines both the January and April session. As we have seen the chapter Purification and Characterisation of Organic Compounds has a total weightage of 1.60% and Principles Related to Practical Chemistry has a weightage of 0.89%. Let’s now have a look at the table which shows us the constituted data of JEE Mains 2025.

Chapter

Concept

Number of Questions in JEE Mains 2025

Purification and Characterisation of Organic Compounds

Chromatography

1

Purification and Characterisation of Organic Compounds

Test for Hydrogen and Carbon

1

Purification and Characterisation of Organic Compounds

Duma's Method

5

Purification and Characterisation of Organic Compounds

Carius Method (Halogen and Sulphur)

2

Purification and Characterisation of Organic Compounds

Percentage Composition And Equivalent Weight

1

Principles Related to Practical Chemistry

Introduction to Salt Analysis

2

Principles Related to Practical Chemistry

Confirmatory Test of Anions CO₃²⁻, S²⁻, SO₃²⁻, NO₂⁻, and CH₃COO⁻

2

Principles Related to Practical Chemistry

Preliminary Test with Dilute Sulphuric Acid (Systematic Analysis of Anions):

1

Principles Related to Practical Chemistry

Formation of Coloured Ions

1

Principles Related to Practical Chemistry

Analysis of Cations

1

Principles Related to Practical Chemistry

Duma's Method

1

Principles Related to Practical Chemistry

Wet Tests for Identification of Cations

1

Principles Related to Practical Chemistry

Oxidation Number

1

JEE Main 2026: How We Found These Ignored but Important Chapters?

As a sincere student, you might ask why should you trust this set of most ignored topics in JEE Main 2025 Chemistry? Well, our experts have analyzed JEE Main 2025 previous year questions (PYQs) and saw that most of the students keep some chapters for the end. And, most of these chapters have multiple questions in the question paper. These are the easy chapters that dont require a lot of weeks of study but appear every year and directly test NCERT knowledge.

JEE Main 2026: How to Revise These Topics in Less Time?

Now that you already know about high weightage topics in JEE Main 2025 Chemistry. And you know exactly which are also the most ignored topics in JEE Main 2025 Chemistry, we will see some tips to excel in these topics to increase your overall marks in JEE Mains 2025 exam:

  1. To thoroughly prepare for JEE Mains 2025 chemistry most ignored topics, refer to this article and the topics we have given.

  2. Plan these topics and how you should finish studying them.

  3. Solve questions so you don't go out of practice.

  4. In every question paper, whenever you solve, never skip these questions by underestimating them.

  5. You can make a separate notebook for these topics that need less time for revision.

  6. Keep at least 1 day where you dedicate to these high weightage topics in JEE Main 2025 Chemistry

UPES B.Tech Admissions 2026

Ranked #43 among Engineering colleges in India by NIRF | Highest Package 1.3 CR , 100% Placements

Amrita University B.Tech 2026

Recognized as Institute of Eminence by Govt. of India | NAAC ‘A++’ Grade | Upto 75% Scholarships

Also Read:

JEE Main- Top 30 Most Repeated Questions & Topics

Most Scoring Concepts For JEE Mains 2025 April Session

Most Scoring Concepts For JEE Mains 2025 January Session

JEE Main Chapter-Wise Weightage

Articles
|
Upcoming Engineering Exams
Ongoing Dates
HITSEEE Application Date

5 Nov'25 - 22 Apr'26 (Online)

Ongoing Dates
SMIT Online Test Application Date

15 Nov'25 - 12 Apr'26 (Online)

Ongoing Dates
SNUSAT Application Date

19 Nov'25 - 31 Mar'26 (Online)

Certifications By Top Providers
Basic Programming using Python
Via Indian Institute of Technology Bombay
Introduction to Biostatistics
Via Indian Institute of Technology Bombay
Programming Basics
Via Indian Institute of Technology Bombay
C-Based VLSI Design
Via Indian Institute of Technology Guwahati
MERN Stack Developer
Via Indian Institute of Technology Kanpur
Udemy
 1525 courses
Swayam
 817 courses
NPTEL
 773 courses
Coursera
 697 courses
Edx
 608 courses
Explore Top Universities Across Globe

Questions related to JEE Main

On Question asked by student community

Have a question related to JEE Main ?

Achieving a JEE Rank of below 100 in JEE Main and Advanced 2027 requires a disciplined, two-year preparation strategy starting from Class 11. Your study plan must integrate competitive exam preparation with your school academics:

Phase 1: Class 11 (Foundation Building and Conceptual Clarity)

  • Syllabus Completion: Dedicate this year to rigorously completing the entire Class 11 NCERT syllabus for Physics, Chemistry, and Mathematics (PCM). Focus heavily on fundamental topics like Mechanics (Physics), General Organic Chemistry (GOC) and Chemical Bonding (Chemistry), and Calculus basics (Maths).

  • Concept Mastery: Do not rush. Master concepts thoroughly before moving to problems. Use standard JEE reference books and ensure you solve all NCERT examples and exercises first.

  • Practice: Allocate 60% of your study time to concept building and 40% to problem-solving. Practice JEE Main Previous Year Questions (PYQs) immediately after completing a chapter to gauge the exam pattern.

Phase 2: Class 12 (Advanced Problem Solving and Revision)

  • Advanced Topics: Complete the Class 12 syllabus by November 2026, focusing on high-weightage topics like Electrostatics, Modern Physics, and Electrochemistry.

  • Revision & Mocks: Reserve the period from December 2026 to January 2027 solely for mock tests and revision. Start taking full-length JEE Main mock tests (3 per week) under strict timed conditions. Analyze each mock test thoroughly to eliminate repeated errors.

  • Target JEE Advanced: After the JEE Main attempts in early 2027, shift focus entirely to JEE Advanced PYQs and challenging, multi-concept problems, taking at least 2 JEE Advanced mock tests per week.

A detailed subject-wise study plan and additional tips on effective JEE preparation starting from Class 11 can be found here: https://engineering.careers360.com/articles/jee-preparation-from-class-11

The last 30 days before the JEE Main exam should be dedicated entirely to revision, practice, and error analysis, shifting focus away from learning new concepts.

Here is a concise, 30-day study plan to maximize your score:

1. Revision Strategy (Weeks 1-3)

  • Prioritize High-Weightage Topics: Spend 70% of your revision time reviewing the most scoring and frequently tested chapters (e.g., Modern Physics, Chemical Kinetics, p-Block elements, Vectors & 3D Geometry). Use your short notes and flashcards for quick review, focusing on formulas, key mechanisms, and definitions.

  • Physics & Maths: Master all formulas and derivations. Practice at least 20 numerical problems daily, emphasizing speed and calculation accuracy.

  • Chemistry: Dedicate 50% of your Chemistry time to Inorganic (NCERT-based) and Organic (name reactions, reagents, mechanisms) concepts.

2. Mock Tests & Analysis (Daily)

  • Daily Mock Test: Solve one full-length JEE Main Mock Test every day (3 hours) under strict exam conditions (9 AM–12 PM or 3 PM–6 PM).

  • Error Analysis (Crucial): Immediately after the test, spend 2-3 hours analyzing your performance:

    • Identify every incorrect or unattempted question.

    • Determine the reason for the error (Conceptual mistake, calculation error, or time pressure).

    • Revisit the concept from your notes/NCERT text to correct the mistake permanently.

3. Final Week Focus (Last 7 Days)

  • Stop Learning New Topics: Absolutely avoid picking up new, complex chapters.

  • PYQ Sprint: Revisit only the last 3 years' JEE Main Previous Year Questions (PYQs). Mark any previously incorrect questions and solve them again.

  • Mindset: Focus on maintaining confidence, getting proper sleep, and using the revision breaks for physical activity to keep your mind fresh.

You can find more detailed subject-wise tips and psychological strategies here: https://engineering.careers360.com/articles/jee-main-preparation-tips

The most effective way to prepare for JEE Main 2026 is by focusing on the most important Previous Year Question Papers (PYQs), which highlight high-weightage and frequently repeated questions across Physics, Chemistry, and Mathematics. Since the exam strongly tests NCERT concepts, mastering these PYQs is essential for predicting the question pattern and improving your time management. https://engineering.careers360.com/articles/jee-mains-chapterwise-pyq-previous-year-questions-solutions-pdf

Hello

If you need a single book or previous year question, so that you can practice from them and revise the most important concepts well, you can download the book in the pdf form by clicking on the link I am attaching below, you just need to click on the link and after that by log in or sign in you can download the pdf and practice from there.

PYQ's BOOK

Hello,

With a 99.5 percentile in JEE Mains, you generally come in the range of All India Rank of 4500 and 7500. The exact rank can vary based on the total number of candidates, the difficulty of the exam, and the normalization process for that session. Here in this article you will find all about the JEE Main cutoff.

I hope it will clear your query!!