In JEE Main Paper 1 (B.E./B.Tech.), Chemistry has 25 questions and carries 100 marks. The paper gives equal weightage to Physics, Chemistry and Mathematics, so Chemistry accounts for one-third of the total 300 marks.
For JEE Advanced, there is no permanently fixed number of Chemistry questions. Both Paper 1 and Paper 2 contain separate Physics, Chemistry and Mathematics sections, but the exact number and question format can vary.
From what I have seen while preparing for competitive exams myself, Chemistry can actually become a scoring section if your basics and revision are strong. The problem is that students sometimes treat the entire subject in the same way, whereas Physical, Organic and Inorganic Chemistry demand quite different preparation.
JEE Main Question Count
For JEE Main Paper 1, the subject-wise distribution is:
Subject | Questions | Marks |
|---|---|---|
Physics | 25 | 100 |
Chemistry | 25 | 100 |
Mathematics | 25 | 100 |
Total | 75 | 300 |
So if you're specifically asking, “How many Chemistry questions come in JEE Main?” the answer is 25.
One thing I'd definitely keep in mind is that 25 questions might sound manageable, but Chemistry covers a huge Class 11 and 12 syllabus. Selective preparation can therefore become risky.
Question Types
JEE Main Chemistry includes two broad question formats:
Section A – Multiple Choice Questions (MCQs)
Section B – Numerical Value Questions
The marking scheme can include negative marking, so attempting a question just because it “looks familiar” can cost marks.
Personally, this is where solving previous-year questions becomes much more useful than endlessly reading notes. PYQs show you whether you can actually retrieve and apply what you've studied under exam conditions.
JEE Advanced Pattern
JEE Advanced works differently.
The 2026 examination consisted of two compulsory three-hour papers, and each paper contained Physics, Chemistry and Mathematics sections. The official brochure states that questions are designed to test comprehension, reasoning and analytical ability.
Unlike JEE Main, you shouldn't memorize a permanent Chemistry question count for Advanced. The exact structure and marking scheme can change, and negative marks may apply to some questions.
That uncertainty is actually part of Advanced—it tests adaptability, not just familiarity with one predictable paper template.
Chemistry Topics
JEE Chemistry broadly covers three areas:
Physical Chemistry – concepts plus numerical problem-solving.
Organic Chemistry – reactions, mechanisms and conceptual connections.
Inorganic Chemistry – periodic trends, compounds, coordination chemistry and other syllabus-based concepts.
For JEE Main especially, I wouldn't underestimate NCERT. But simply reading NCERT isn't the same as knowing it. Revision and question practice are what expose those tiny details you thought you remembered but actually didn't.
Main vs. Advanced
JEE Main generally feels more structured and speed-oriented, while JEE Advanced questions can demand deeper conceptual reasoning and may combine multiple ideas.
So my preparation approach would be:
NCERT + concepts → JEE Main PYQs → timed mocks → deeper multi-concept problems for Advanced.
Trying difficult Advanced questions before your basics are stable can sometimes feel productive without actually improving your score.
FAQs
How many Chemistry questions are in JEE Main?
There are 25 Chemistry questions in JEE Main Paper 1 under the current 2026 pattern.
How many marks is Chemistry worth?
Chemistry carries 100 marks out of 300 in JEE Main Paper 1.
Must Read: Is NCERT enough for JEE Main Chemistry?
