Direct answers to common JEE Main prep questions, backed by analysis of 15,000+ historical questions.
PredictJEE is a free statistical prediction platform for the JEE Main exam. It analyzes 15,000+ historical JEE Main questions across 17 years (2010 to 2026) to rank Physics, Chemistry, and Mathematics topics by likelihood of appearing in the next exam. The platform tracks 345 distinct topic codes and produces a ranked study plan, a readiness diagnostic, and a daily challenge — all free.
Yes. PredictJEE is completely free. There is no signup wall, no paywall, and no premium tier. The full study plan, readiness test, daily challenge, predictions page, AI-powered hints, and step-by-step solutions are all free to use.
88% of PredictJEE's top-25 ranked topics appeared in the April 2026 JEE Main exam. The prediction engine uses a 10-signal adaptive framework, walk-forward validated on JEE Main data from 2015 through 2025. In mature backtest years (2022–2025) the Physics engine achieved an F1 score of 87.7% and the Mathematics engine 81–84%.
PredictJEE is built for JEE Main aspirants in classes 11 and 12 and dropper-year students preparing for the January or April attempts. It is optimized for the Indian curriculum, the NTA exam pattern, and the JEE Main syllabus. Coaching students, self-study aspirants, and school teachers all use it.
PredictJEE is statistical, not editorial. Most JEE platforms publish topic recommendations based on expert opinion. PredictJEE ranks topics using historical exam data and ten quantitative signals: long and short-horizon frequency, trend, cycle, gap-boost, over-exposure, recency, short-trend, short-cycle, and momentum. Every prediction is walk-forward validated against the next real exam.
Based on 17 years of JEE Main data, the highest-frequency topics are: in Physics — Current Electricity (Potentiometer, Wheatstone Bridge), Modern Physics (Bohr Model & Hydrogen Spectrum), Electromagnetic Waves, Electrostatics (Capacitors, Gauss Law), and Kinematics; in Chemistry — Coordination Compounds, d- and f-Block Elements, Biomolecules, Redox & Equivalent Concept, and General Organic Chemistry; in Mathematics — Limits & Continuity, Complex Numbers, Inverse Trigonometric Functions, Area Under Curves, and Conic Sections (Ellipse, Hyperbola). These topics have appeared in 9 or more of the last 11 JEE Main sessions.
A focused 6-month plan: Month 1 — finish all Tier 1 (MUST STUDY) topics and 70% of NCERT theory. Month 2 — complete Tier 2 (SHOULD STUDY) topics and start chapter-wise practice. Months 3–4 — daily practice on weak topics, weekly full mocks, and revision of all formulas. Month 5 — full-length mock tests every 3 days, Previous Year Question (PYQ) cycles, and revision of error logs. Month 6 — daily mocks, NCERT skim, and cooldown the last 5 days. PredictJEE's free study plan ranks the top 80 topics by predicted likelihood so you can focus on what matters.
Across the 2010–2026 JEE Main exams, average chapter weightage is approximately — Physics: Mechanics 26%, Electrodynamics 24%, Modern Physics & Optics 20%, Heat & Thermodynamics 12%, Waves & SHM 10%, Others 8%. Chemistry: Physical 33%, Organic 34%, Inorganic 33% (close to balanced). Mathematics: Calculus 28%, Algebra 25%, Coordinate Geometry 20%, Trigonometry & Vector/3D 15%, Statistics & Probability 12%. Specific topic-level weightage shifts year to year and is what the prediction engine tracks.
Both, with different roles. NCERT is essential for Chemistry — roughly 40–50% of JEE Main Chemistry questions come directly from NCERT lines, especially Inorganic and Organic chapters. For Physics and Mathematics, NCERT covers concepts but lacks problem depth. Use NCERT as a foundation, then move to a coaching module (Allen, Resonance, Cengage, Arihant) for problem variety. PYQs from the last 10 years are non-negotiable regardless of source.
Quality matters more than total hours. Class 11 students typically study 5–6 hours a day plus school. Class 12 students aim for 6–8 hours during the school year and 10–12 hours in the final 3 months. Droppers usually do 10–12 hours daily, broken into focused blocks of 90 minutes with breaks. Sleep 7+ hours, take one rest day a week, and track problems solved (not hours spent) as the primary metric.
JEE Main is reported as a percentile (0–100) and a normalized score (out of 300). For top NITs (computer science branch), aim for 99+ percentile, roughly 220–250 raw marks. For mid-tier NITs and IIITs, 97–99 percentile (170–220 raw). To clear the JEE Advanced cutoff and become eligible for IITs, you need around 93–95 percentile (top 2.5 lakh general-category candidates), which translates to roughly 130–150 raw marks. Top 1000 ranks usually require 99.99+ percentile.
Yes, with measurable accuracy. JEE Main follows statistically identifiable patterns at the topic level. PredictJEE's 10-signal framework achieved 88% precision on its top-25 ranked topics in the April 2026 exam, walk-forward validated on data from 2015 through 2025. Predictions are not guarantees — they are probabilistic rankings. See /methodology for the full technical details.
Each topic is scored across ten statistical signals — five long-horizon (frequency, trend, cycle, gap-boost, over-exposure) and five short-horizon (frequency, recency, trend, cycle, momentum). The signals are combined using weights tuned via walk-forward validation. A volume confidence discount reduces the score of topics with very few historical occurrences. The final score determines rank. Topics are then placed into Tier 1 (MUST STUDY), Tier 2 (SHOULD STUDY), Tier 3 (LOW PRIORITY), or Tier 4 (RARELY ASKED).
A predicted topic is a question type — a category more granular than a chapter. For example, the chapter 'Waves' contains predicted topics like Standing Waves, Doppler Effect, and Superposition of Waves. Predicting at the topic level is more actionable than predicting at the chapter level because it tells you exactly what type of problem to prepare for, not just which chapter to revise.
The 10 signals are: (1) long-horizon frequency — how often the topic has appeared since 2010; (2) long-horizon trend — whether it is rising or falling over years; (3) long-horizon cycle — periodic appearance schedules; (4) gap-boost — topics absent for several years are 'due'; (5) over-exposure — topics tested too recently are deprioritized; (6) short-horizon frequency — appearances in the last 5 years; (7) short-horizon recency — how recently it last appeared; (8) short-horizon trend — recent direction; (9) short-horizon cycle — recent periodicity; (10) momentum — composite of recent acceleration. Signal weights are calibrated yearly via walk-forward validation.
After every JEE Main attempt. When a new exam paper is released, the new questions are tagged into the database, the actual results are scored against the prediction model, signal weights are recalibrated, and a new ranked list is published for the next attempt. The April 2026 results were the most recent calibration; January 2027 predictions are now live.
Yes. PredictJEE has no affiliation with NTA, Allen, Resonance, FIITJEE, or any coaching institute. Predictions are generated purely from historical question data scraped from public sources. There is no editorial input, no insider information, and no coaching influence on the rankings. The methodology is fully documented at /methodology.
PredictJEE applies a volume confidence discount: topics with fewer than 5 historical occurrences are scored at 50% confidence, fewer than 10 at 75%, and fewer than 20 at 90%. This prevents low-count topics from being inflated by signal noise. A topic that 'should' be important based on syllabus weight may rank low if it has only appeared 2 or 3 times historically. The system trusts data over intuition.
The Readiness Test is a free 5-minute diagnostic that measures how prepared you are for JEE Main across Physics, Chemistry, and Mathematics. You select the chapters you have already covered; the system computes a blended readiness score combining coverage and any practice mastery you have accumulated, then shows you exactly which MUST STUDY topics you still need to cover. No signup required.
The daily challenge gives you 10 hand-picked JEE Main questions every day. Solving them builds your streak counter and earns a position on the public leaderboard. Questions rotate through high-priority topics from the prediction engine so daily practice naturally aligns with the most likely exam topics. Free, no signup needed to play, optional signup to save streaks.
Yes. Every question in the practice bank is sourced from official JEE Main papers from 2010 through 2026. Each question is tagged with its exam year and session (January or April attempt). All answers have been verified through 10 independent verification passes including 5-model AI cross-check, web scraping against trusted sources, and manual expert review of disputed answers. Estimated answer accuracy is ~99.5%.
PredictJEE's practice bank contains 1,200+ verified JEE Main questions across Physics, Chemistry, and Mathematics. They are organized by topic, with one free question per topic and additional practice questions for every topic — all completely free. Questions are pre-rendered with MathJax for fast display and include images, options, and step-by-step solutions.
Yes. Every practice question has a pre-generated step-by-step solution covering the concept, formula, working, and final answer. AI-powered hints (two levels of progressive disclosure) and a chat assistant are available if you want guided help while solving. The /solve route lets you type any JEE-style question and get a worked solution.
Yes. Practice exam mode is at /practice/exam. It simulates the JEE Main format — 30 questions per subject, 3-hour timer, official marking scheme (+4 for correct, –1 for wrong, 0 unattempted). After submission you see a full performance breakdown, topic-wise accuracy, and time spent per question. Mock test mode is free.