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JEE Main PYQ Concept Explorer

Every chapter of the JEE Main previous-year-question database, 14,973 questions across 91 chapters. Pick a chapter below — each opens as its own self-contained page with topic/difficulty/type filters and "same concept, tested differently" neighbor links.

📊 My practice progress

Mathematics 31 chapters · 4,788 questions

Chemistry 32 chapters · 5,088 questions

Alcohols Phenols And Ethers170 Aldehydes Ketones And Carboxylic Acids249 Basics Of Organic Chemistry270 Biomolecules181 Chemical Bonding And Molecular Structure243 Chemical Equilibrium108 Chemical Kinetics And Nuclear Chemistry197 Chemistry In Everyday Life78 Compounds Containing Nitrogen227 Coordination Compounds318 D And F Block Elements222 Electrochemistry205 Environmental Chemistry96 Gaseous State66 Haloalkanes And Haloarenes174 Hydrocarbons154 Hydrogen87 Ionic Equilibrium129 Isolation Of Elements112 P Block Elements259 Periodic Table And Periodicity162 Polymers79 Practical Organic Chemistry90 Redox Reactions66 S Block Elements123 Salt Analysis33 Solid State69 Solutions172 Some Basic Concepts Of Chemistry228 Structure Of Atom194 Surface Chemistry116 Thermodynamics211

Question data + embeddings from HostServer001/jee_mains_pyqs_data_base (MIT-licensed, GitHub Release-hosted). The chapter pages keep a practice record — time per question and right/wrong/skipped — in this browser's local storage on this device only. It is never sent anywhere; these pages make zero network calls. Every chapter page has an off switch and a "clear my data" button, and the progress page shows what has been saved.