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Build a JEE Main Mathematics test from the 14 units: a full 25-question section with five numericals, a short Calculus or Coordinate Geometry drill, or a paper weighted towards the units that cost you most. With fewer, heavier units than Physics or Chemistry, Maths rewards weighting more than any other section — in a full test, Coordinate Geometry alone gets 4 questions.
Free · no sign-up · updated October 2026
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Press Generate paper plan for a chapter-by-chapter blueprint: questions per chapter, numericals, marks and time — ready to print and fill from your PYQs, modules or the BrainStride question bank.
Every chapter in the JEE Main Maths syllabus, heaviest first. The share column is what a 25-question test gives each chapter in exam-weightage mode, before rounding.
| Chapter | Class | Questions per paper | Share of the subject | The mistake it catches |
|---|---|---|---|---|
| Co-ordinate Geometry | 11 | 3–5 | 16% | Standard-form conditions quoted for a conic that has been shifted or rotated. |
| Limit, Continuity and Differentiability | 11–12 | 2–3 | 10% | L’Hôpital applied where the limit is not of an indeterminate form. |
| Integral Calculus | 12 | 2–3 | 10% | Definite integrals solved without changing the limits after a substitution. |
| Sets, Relations and Functions | 11–12 | 1–2 | 6% | Domain checked after solving instead of before, so extra roots survive. |
| Complex Numbers and Quadratic Equations | 11 | 1–2 | 6% | Losing a root by squaring, or forgetting that complex roots come in pairs. |
| Matrices and Determinants | 12 | 1–2 | 6% | Row operations applied to a determinant as if it were a matrix equation. |
| Permutations and Combinations | 11 | 1–2 | 6% | Counting arrangements twice because identical objects are treated as distinct. |
| Sequence and Series | 11 | 1–2 | 6% | Using the AP sum formula on a series that stops being arithmetic partway. |
| Differential Equations | 12 | 1–2 | 6% | Integrating factor written for the wrong variable when the equation is in dx/dy. |
| Three Dimensional Geometry | 11–12 | 1–2 | 6% | Direction ratios not normalised before using the angle formula. |
| Vector Algebra | 12 | 1–2 | 6% | Scalar and vector triple products confused, so the answer has the wrong type. |
| Statistics and Probability | 11–12 | 1–2 | 6% | Conditional probability treated as independent, so Bayes is skipped. |
| Trigonometry | 11–12 | 1–2 | 6% | General solutions dropped: one value reported where a family was asked for. |
| Binomial Theorem and its Simple Applications | 11 | 0–2 | 4% | Off-by-one in the general term: the (r+1)th term, not the rth. |
Chapter weights are BrainStride’s reading of past papers, not official data — NTA publishes no chapter weightage. Ranges overlap, so they do not add up exactly to the subject total.
The same 25-question paper twice: once weighted like the exam, once with Co-ordinate Geometry and Integral Calculus marked weak. Only the rows that change are shown.
| Chapter | Exam weightage | Weak-chapter mode | Change |
|---|---|---|---|
| Sets, Relations and Functions | 2 | 1 | -1 |
| Complex Numbers and Quadratic Equations | 2 | 1 | -1 |
| Matrices and Determinants | 2 | 1 | -1 |
| Permutations and Combinations | 2 | 1 | -1 |
| Limit, Continuity and Differentiability | 3 | 2 | -1 |
| Integral Calculus | 3 | 5 | +2 |
| Co-ordinate Geometry | 4 | 7 | +3 |
Marked chapters get 2.5× their usual share; the questions come from the chapters the paper would otherwise give the most to.
Mathematics has fewer units than Physics or Chemistry — 14 against 20 — and a few of them are very heavy. That makes weighting matter more here than in any other section.
Calculus and Coordinate Geometry first. Limits and differentiability, integral calculus and differential equations together, plus Coordinate Geometry, carry a large share of the section in our reading of past papers. A Maths test that gives every unit one question underweights exactly the units that decide most scores.
Time is the real enemy. Maths questions in JEE Main are often long rather than hard. Students who can solve everything in the test still lose marks by spending eight minutes on a conic. Keep generated Maths tests strictly to 2.4 minutes a question and mark every question you finished but took more than four minutes on — those are your time-pressure chapters.
Numericals reward exactness. Integer-answer questions have no options to check against, so an arithmetic slip is a lost mark plus a penalty. Put one or two numericals in every Maths test, even short ones.
The per-unit ranges behind the generator are on our JEE Main Maths page; the Coordinate Geometry and Definite Integrals chapter guides cover the two heaviest areas.
A weekly cycle
Ten questions, equal weighting, only the chapters you finished last week. It tells you whether they stuck.
Concept gaps go back to the textbook; silly errors get accuracy drills on the same chapter; slow solves get timed sets.
Mark the two chapters that cost you most and build a 25-question paper. They get two and a half times their usual share.
A realistic subject paper, scored with +4 / −1, to check the fixes show up when the weighting is fair.
Coordinate Geometry and Calculus — limits and differentiability, integral calculus and differential equations — carry the most questions in BrainStride’s reading of past papers, followed by algebra units such as matrices, complex numbers and permutations. NTA publishes no chapter weightage, so these are estimates given as ranges.
In a full 25-question Maths test weighted like the exam, the generator gives Coordinate Geometry 4 questions — more than any other unit — because straight lines, circles and conics together recur in nearly every shift.
Usually because a few long questions take far more than their share. At exam pace each question has about 2.4 minutes. In generated tests, mark every question that took over four minutes; the units that keep appearing in that list are where timed practice, not more theory, will move your score.
Not in the sense of writing questions. The generator is a rule-based planner: it reads the exam pattern and BrainStride’s chapter weights from past papers and decides how many questions each chapter gets, so the result is the same every time for the same settings. The AI part of BrainStride is the tutor, which picks your next practice questions from a teacher-checked bank based on the mistakes you have made.
No. The paper plan is built in your browser, nothing is sent to a server and there is no sign-up. Print it or copy it as text if you want to keep it. The free BrainStride diagnostic is a separate, optional step if you want a plan built around your own mistakes.
Exam patterns are from the official information bulletins. Chapter weights are BrainStride estimates from past papers, not official data.
The 20-minute diagnostic names them — then every practice set and every generated test can lean on them.