The Pattern in One Place
JEE Main Paper 1, taken by B.E. and B.Tech aspirants, is a computer-based test of three hours. It carries 75 questions across Physics, Chemistry and Mathematics — twenty-five per subject — and every one of them is compulsory, for a maximum of 300 marks. Each subject is split into two sections, and the split is where most of the strategy lives.
- Conducting body: National Testing Agency, in computer-based mode across multiple days and two daily shifts.
- Section A, per subject: 20 multiple-choice questions, all compulsory, four marks each.
- Section B, per subject: 5 numerical-value questions, all compulsory, four marks each.
- Total: 75 questions — 60 in Section A and 15 in Section B. Nothing is optional and nothing can be skipped for free.
- Changed from the 2025 cycle: Section B used to carry 10 numerical questions of which any 5 were attempted. NTA removed that choice, so the paper is no longer 90 questions with 75 attempted.
- Maximum marks: 300, distributed equally as 100 per subject.
- Duration: 3 hours, extended to 4 hours for eligible PwD candidates.
- Languages: offered in thirteen languages including English, Hindi and several regional languages.
Paper 2A for B.Arch and Paper 2B for B.Planning follow different structures entirely, including a drawing test in the architecture paper. Those are covered separately in the JEE Main Paper 2 guide.
The Marking Scheme, and the Detail People Get Wrong
Every correct answer is worth four marks. Every incorrect answer costs one mark — in Section A and in Section B alike. Unattempted questions cost nothing. The first and the last of those are familiar; the middle one is where people get hurt, because Section B now carries negative marking too. Up to the 2024 cycle the numerical section was penalty-free, and a substantial number of candidates still prepare with that old rule in their heads.
The difference is not academic. Under the old penalty-free Section B, the correct play was to put a value in every slot regardless of confidence, because a wrong numerical cost nothing. Under the current rule, a genuinely blind guess at a numerical is close to pure loss: unlike a four-option MCQ there is no one-in-four rescue, so the expected value of a random value is simply minus one. Read the information bulletin for your cycle anyway — the rule has already been changed once — but plan on the penalty applying, because it has applied in every cycle from 2025.
Section B Changed: Five Compulsory Numericals, Not Any 5 of 10
Section B used to be the one place in the paper where you were handed a choice: ten numerical questions per subject, of which you answered any five, so the five that looked worst could simply be left alone. NTA discontinued that structure from the 2025 cycle, and it has stayed discontinued through 2026 and 2027. There are now five numerical questions per subject, all five are compulsory, and each wrong one costs a mark. That is the change in one line — a guessed numerical is no longer free, and the habit of walking away from the hardest five no longer exists to be exploited. If you remember the old structure, or you are working from a guide written before 2025, this is the paragraph that supersedes it.
What survives from the old advice is the triage, not the discarding. Read all five numericals in a subject before solving any of them: thirty seconds of scanning routinely finds two that are noticeably more tractable than the rest, and banking those first stops you sinking eleven minutes into the hardest one and running the clock out on the other four. The difference is what happens afterwards. The hard ones no longer go away, so you return to them with whatever time is left and answer the ones you can reason to a value — and leave blank only the ones where you would be inventing a number, since a blank costs nothing and an invented number costs one. The mechanics of this section, including how to handle answers that must be entered as values rather than selected, are covered in the numerical value questions guide.
Why 300 Marks Divided Equally Is a Strategy Instruction
Each subject carries exactly 100 marks. That symmetry means a mark of Chemistry is worth precisely as much as a mark of Mathematics, which sounds obvious and is routinely ignored. Aspirants pour disproportionate hours into the subject they find most intellectually satisfying — usually Mathematics or Physics — and treat Chemistry as something to be topped up later.
The arithmetic does not support that. Chemistry is generally the fastest subject to answer and the most reliably scoring, particularly its Inorganic half, which stays close to NCERT. A candidate who converts Chemistry into a near-certain 85 to 90 has bought themselves the freedom to be merely competent in one of the other two. A candidate who leaves Chemistry at 55 needs to be excellent in both. The second path is much harder and much more common.
The Clock: One Timer, Three Subjects
There is no per-section timer in JEE Main. All three hours are yours to allocate across all three subjects, and you may move between them freely. This is genuine freedom and it is also the mechanism by which most papers are lost — a candidate who sinks fifty minutes into Mathematics before opening Chemistry has already capped their score, whatever they know.
The standard defence is a pre-committed time budget decided before you enter the hall and rehearsed in mocks: a fixed allocation per subject, a fixed order, and a hard rule for abandoning a question. Whether you should open with your strongest or your weakest subject is a real question with a defensible answer either way, and it is worked through in the time management guide alongside the attempt strategy guide.
The Interface Is Part of the Pattern
Because the exam is computer-based, the screen itself is part of what you are being tested on. The question palette colour-codes every question as answered, not answered, marked for review, or answered and marked for review. There is an on-screen numerical keypad for Section B. Rough work happens on the sheets provided, not on the screen, so the transfer between paper and interface is a real source of errors.
The most expensive interface mistake is the marked-for-review trap. A question marked for review and answered is counted; a question marked for review without an answer entered is not. Candidates lose marks every cycle to questions they solved on rough paper and never entered. The fix is mechanical: enter an answer before marking anything for review, and reserve the last five minutes for a palette sweep rather than a final attempt. All of this is muscle memory, which is why it should be built on a simulator that reproduces the real interface rather than on paper — the free JEE Main mock test runs the same palette and keypad behaviour.
Two Sessions, One Score
The pattern is identical across both sessions, but the scoring across them is not additive. If you appear in both January and April, your final NTA score is the better of the two, not an average and not a sum. That single rule makes Session 1 a low-risk attempt: the worst realistic outcome is a percentile that gets discarded, and the best is a score you no longer have to chase in April.
It also explains why raw marks are not what appears on your scorecard. Because different shifts see different papers, your marks are converted into a percentile within your own shift before any comparison happens. That process, and the way a fixed raw score can map to different percentiles in different cycles, is covered in the normalisation and NTA score guide and in marks versus percentile.
Turning the Pattern Into a Plan
Reduce the whole structure to four commitments and rehearse them until they are boring. Decide your subject order and time budget in advance. Read all five Section B numericals in a subject before solving any of them, then come back to the hard ones rather than abandoning them. Never guess blindly in Section B, and guess in Section A only when you have eliminated at least two options. Reserve the final five minutes for a palette sweep and enter nothing new during it.
None of those four is knowledge. All four are habits, which means they are built by repetition under a clock and nowhere else. Every full-length paper you sit is a rehearsal of the pattern as much as of the syllabus, and the previous year question papers are the most faithful rehearsal available.