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JEE Main Chemistry Exam Pattern Details 2023

Last updated date: 28th Feb 2024
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JEE Main Chemistry Question Pattern, Marking Scheme, & Weightage

The National Testing Agency (NTA) conducts JEE Main exam every year to provide students admissions in various courses like B.Tech., B.Arch., B.Plan & B.E. It is a national-level engineering entrance exam in the country that enables qualifying aspirants to pursue their further studies in the top engineering institutes across the country. 

The JEE Main 2023 exam is held for two papers  - Paper 1 (B.Tech/B.E courses) and Paper 2 has further two parts - Paper 2A (B.Arch courses) and Paper 2B (B.Plan courses). Understanding the exam pattern is essential for the candidates to start preparations accordingly.

This article discusses everything about JEE Main 2023 Chemistry exam pattern, marking scheme, important topics & weightage. Keep reading to know:

JEE Main 2023 Chemistry Exam Pattern -  Overview

JEE Main Chemistry is often considered the scoring & easiest section in the exam. There will be 30 Objective-type questions from its parts divided into Physical Chemistry, Organic Chemistry, and Inorganic Chemistry. Students are required to answer any 25 questions. 

Look at the new pattern IIT JEE Chemistry and start preparing accordingly. 



Mode of Exam

Online Computer-Based Test

Marking Scheme

4 marks for every right answer, and 1 mark will be decreased for each incorrect answer

Language of Exam

Hindi, English and Gujarati

Types of Questions

Multiple Choice Questions (MCQs) and Numerical Value-Based

Total Number of Questions 

30 (20+10) Questions

Total Marks


IIT JEE Chemistry Exam Details

  • JEE Main 2023 Chemistry will be conducted in online mode, i.e., it is a Computer-based Test.

  • Students will be asked 30 MCQs-based questions, out of which 25 are compulsory.

  • As per JEE Main 2023 Marking scheme, aspirants will be given 4 marks for every right answer, while 1 mark will be deducted for each incorrect answer. There is no negative marking for Numerical-value based questions.

  • Aspirants will be given a total of 3 hours duration to attempt 75 questions out of 90 questions.

JEE Main 2023 Chemistry- Important Topics

The syllabus of JEE Main Chemistry deals with theories more than calculations, making it a comparatively easier subject than Physics and Mathematics. The syllabus of Chemistry JEE is divided into three sections - Physical Chemistry, Organic Chemistry, and Inorganic Chemistry. 

Below is the table containing a list of important topics/chapters of JEE Main Chemistry section. Take a look:

Chapter-wise Weightage of JEE Main Chemistry 2023

Below we’ve mentioned a list of chapter wise-weightage for Chemistry to help candidates prepare a strategic study plan. Candidates can cover all high-weightage chapters and score well in the JEE Main exam. Take a look:

Important Topics 

Number of Questions

Total Marks

Periodic table and Representative Elements



Transition Elements and Coordination Chemistry



Thermodynamics And Gaseous State



Atomic Structure



Chemical Bonding



Chemical And Ionic Equilibrium



Solid State And Surface Chemistry



Nuclear Chemistry And Environment



Mole Concept



Redox Reaction



Chemical Kinetics






Solution and Colligative Properties



General Organic Chemistry



Carboxylic Acid and their Derivatives



Aromatic Compounds



Best Books for JEE Main 2023 Chemistry

To score well, students getting ready for JEE Main 2023 need to have adequate knowledge of the new pattern of IIT JEE Chemistry and also use the most suitable books. The best books for JEE Main Chemistry 2023 will help students understand the fundamentals and boost the concepts so that they can solve any question in the exam, irrespective of their difficulty level.

Though NCERT books are considered best for JEE preparations, students should also refer to these below-mentioned books for their Chemistry preparations.

  • Organic Chemistry by O P Tandon

  • Concept of Physical Chemistry by P Bahadur

  • Concise Inorganic Chemistry by J D Lee

  • R.C. Mukherjee's Approach to Chemical Calculations

  • Organic Chemistry by Morrison and Boyd

  • Numerical Chemistry by P Bahadur, etc.

Preparation Tips for Chemistry JEE Main 2023 

Applicants preparing for IIT JEE often ask, “how to prepare for Chemistry?” Candidates must possess a thorough knowledge of fundamentals regarding all the areas, including Physical, Organic, and Inorganic Chemistry. Only the candidates with a firm grasp of all three components have higher chances of scoring better. 

Here we’re sharing some tips to help you prepare for Chemistry. Take a look:

1. Read NCERT Chemistry Books

Referring to Chemistry NCERT textbooks of Class 11th and 12th without skipping valuable details, examples, flowcharts, or diagrams will help candidates understand the concept, resolve doubts and build up a strong foundation.

2. Last Year’s Question Papers/Mock Tests

Candidates must solve previous years’ question papers and take mock tests during their JEE Main preparations. It will help them understand the exam pattern, type & difficulty level of questions. It will also improve their speed and accuracy in attempting the questions.

3. Periodic Table & Complete Reaction Mechanism

Students must pay attention to the periodic table while preparing for Chemistry. You can use flashcards for remembering purposes. Additionally, develop a complete understanding of reaction mechanisms, especially for Organic Chemistry.

4. Learn Formulas Thoroughly.

Candidates must memorize important formulas of Chemical bonding, Equilibrium, Kinetics, and Radioactivity. Also, most of the questions come from p and s-block elements. So, pay extra attention to them.

Wrapping Up

Now you know everything about JEE Main 2023 Chemistry exam pattern. To score better in the exam, candidates should take chapter-wise practice tests to hone their fundamental skills to score better in the exam. Also, continuously revise concepts, equations & formulas to ensure better retention.

FAQs on JEE Main Chemistry Exam Pattern Details 2023

1. How many questions will be there in the Chemistry section?

As per NTA notifications, candidates will be asked 30 MCQ-based questions from the Chemistry section. Out of these, 25 questions are compulsory to attempt.

2. Will there be any descriptive questions in JEE Main Chemistry section?

According to the JEE Main exam pattern, the Chemistry section will only have Multiple Choice Questions (MCQs) and Numerical Value-based Questions.

3. Is there any negative marking in the JEE Main exam?

As per JEE Main Marking scheme, candidates will get 4 marks for each correct answer, and 1 mark will be cut for each incorrect answer. There will be no deduction for unanswered questions.