JEE Main Chemistry Exam Pattern 2025

The National Testing Agency (NTA) conducts the 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 2025 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 the JEE Main 2025 Chemistry exam pattern, marking scheme, important topics & weightage. Keep reading to know:

JEE Main 2025 Dates - Sessions 1 and 2

JEE Main 2025 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. 20 Questions are Multiple Choice Questions (MCQs) and 10 are Numerical Value Questions (NVQs) out of which 5 are to be attempted.  Students are required to answer any 25 questions.

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

Students can have a look at all the JEE Main Question Papers for better exam preparation.

IIT JEE Chemistry Exam Details

• JEE Main 2025 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 2025 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 2025 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.

Physical Chemistry:

• Chemical Bonding: Delves into the forces that hold atoms and molecules together, including ionic bonding, covalent bonding, metallic bonding, and van der Waals forces.

• Chemical Thermodynamics: Investigates energy changes during chemical reactions, including enthalpy, entropy, and Gibbs free energy.

• Chemical Equilibrium: Examines the state where forward and reverse reactions balance, including equilibrium constants, Le Chatelier's principle, and solubility equilibria.

• Solutions: Focuses on the properties and behaviour of homogeneous mixtures, including colligative properties, non-ideal solutions, and electrochemical cells.

Inorganic Chemistry:

• Periodic Table and Chemical Families: Studies the organisation of elements and their properties based on electron configurations and periodic trends.

• Classification and Characteristics of Elements: Covers the classification of elements into groups and periods based on their electron configurations and chemical properties.

• Coordination Chemistry: Covers the complex structures formed by metal ions and ligands, including nomenclature, isomerism, and bonding theories.

Organic Chemistry:

• Some Basic Principles of Organic Chemistry: Introduces the fundamental principles and nomenclature of organic compounds, including functional groups, isomers, and stereochemistry.

• Hydrocarbons: Focuses on the properties and reactions of organic compounds containing carbon and hydrogen, including alkanes, alkenes, alkynes, and aromatic compounds.

• Organic Halides and Alcohols: Studies compounds containing halogens and alcohols, including nomenclature, physical properties, chemical reactions, and their applications.

• Aldehydes, Ketones, Carboxylic Acids, and Amines: Covers the properties and reactions of these important functional groups, including their nomenclature, preparation, reactions, and applications.

• Biomolecules: Examines the structure and function of biological molecules, including carbohydrates, lipids, proteins, and nucleic acids.

Chapter-wise Weightage of JEE Main Chemistry 2025

Below we’ve mentioned a list of chapter weights 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:

Keys Points to Remember for JEE Main Exam 2025

• Read each question carefully before answering. In Chemistry, sometimes questions are straightforward but can be tricky if rushed.

• Begin with the topics you know well, like specific chapters in Physical, Organic, or Inorganic Chemistry. This builds confidence and saves time.

• Don’t waste time on questions you’re not sure about. Move on and come back later if you have time. This helps avoid negative markings.

• Chemistry is often less time-consuming than other sections, but keep a steady pace to ensure you have enough time for all questions.

• For questions involving calculations, double-check your answers to avoid small mistakes that can lead to wrong answers.

• Chemistry has factual questions, so a calm mind will help you recall information more easily. Take a deep breath if you feel anxious.

Best Books for JEE Main 2025 Chemistry

To score well, students getting ready for JEE Main 2025 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 2025 will help students understand the fundamentals and build 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

Essential Guidelines for JEE Main Exam Day

To avoid any confusion on the exam day, here are some important tips for candidates:

• Arrive Early: Plan to reach the examination centre well before the reporting time. The gates usually open two hours in advance, and strict checks are conducted, so arriving early allows you enough time to manage entry smoothly.

• Carry Necessary Documents: Don’t forget your ID proof and JEE Main admit card. These documents are mandatory for entry into the exam hall, and without them, you won’t be allowed in.

• Leave Electronics Behind: Electronic items like watches, calculators, and mobile phones, as well as books and notebooks, are strictly prohibited in the exam hall. Make sure to leave these items at home to avoid any last-minute issues.

Preparation Tips for Chemistry JEE Main 2025

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, developed a complete understanding of reaction mechanisms, especially in Organic Chemistry.

4. Learn Formulas Thoroughly.

Candidates must memorise 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.

Now you know everything about the JEE Main 2025 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.

Important Study Materials Links for JEE Exams