JEE Main 2025 Chemistry Question Paper Pattern, Marking Scheme, & Weightage
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
FAQs on JEE Main Chemistry Exam Pattern 2025
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 the 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.
4. What is the JEE Main Chemistry exam pattern for 2025?
The JEE Main Chemistry exam pattern includes both Multiple Choice Questions (MCQs) and Numerical Value-based Questions. This pattern helps evaluate conceptual understanding as well as problem-solving skills.
5. How many questions are there in JEE Mains Chemistry, and how many are compulsory?
The JEE Mains Chemistry section has a total of 30 questions, with 25 compulsory questions that candidates must attempt.
6. What is the total duration of the JEE Main Chemistry section?
The Chemistry section, along with the entire JEE Main exam, is conducted within a total duration of 3 hours.
7. What are the total marks for the JEE Mains Chemistry section?
The JEE Mains Chemistry total marks are 100, contributing to the overall exam score.
8. What types of questions are included in the JEE Main Chemistry question paper pattern?
The JEE Main Chemistry question paper pattern includes 20 MCQs and 10 Numerical Value-based Questions, out of which candidates must answer any 5 Numerical questions.
9. Are the questions in the JEE Chemistry paper pattern based on the NCERT syllabus?
Yes, the JEE Chemistry paper pattern is largely based on the NCERT syllabus of Classes 11 and 12, covering Physical, Organic, and Inorganic Chemistry.
10. Is there a specific weightage given to Physical, Organic, and Inorganic Chemistry in JEE Mains 2025 Chemistry?
While the exact weightage may vary, the JEE Mains 2025 Chemistry question paper pattern generally includes questions from all three branches: Physical, Organic, and Inorganic Chemistry.
11. Are there any changes in the JEE Main Chemistry exam pattern for 2025?
For updates on the JEE Main Chemistry exam pattern for 2025, candidates are advised to check the latest notifications by NTA. Generally, the pattern includes MCQs and Numerical Value-based Questions.
12. What is the marking scheme for Numerical Value-based Questions in JEE Mains Chemistry?
In JEE Mains Chemistry, Numerical Value-based Questions follow a marking scheme where each correct answer awards 4 marks, but there is no negative marking for incorrect responses in this question type.
13. How should I manage time during the JEE Main Chemistry exam?
To effectively manage time, attempt questions you're confident in first, especially in MCQs, and save Numerical Value-based Questions for later if they require more time.
14. Can candidates skip questions in the JEE Main Chemistry exam?
Yes, candidates can skip questions in the JEE Main Chemistry section. However, it’s essential to focus on accuracy to avoid negative markings in MCQs.
15. Are calculators or electronic devices allowed in the JEE Chemistry paper pattern?
No, calculators, electronic devices, and other study materials are permitted during the JEE Main Chemistry exam as per exam guidelines.
16. How much time should I allocate to each section in the JEE Main Chemistry exam details?
Ideally, candidates should aim to complete the Chemistry section within 45-50 minutes, allowing time for Physics and Mathematics within the 3-hour exam duration.
17. Will JEE Main Chemistry have any optional questions in 2025?
Yes, in the JEE Main Chemistry section, 10 Numerical Value-based Questions are provided, out of which candidates need to attempt any 5.
18. What topics are covered under the JEE Mains 2025 Chemistry question paper pattern?
The JEE Mains 2025 Chemistry question paper pattern covers topics from Physical, Organic, and Inorganic Chemistry, based on the NCERT syllabus.
