The chapter structure now matches the NTA 2026 Paper 1 syllabus exactly
(verified against the official PDF at cdnbbsr.s3waas.gov.in):
- Physics: 20 units (Units and Measurements, Kinematics, Laws of Motion,
... Electronic Devices, Experimental Skills)
- Chemistry: 21 units (Some Basic Concepts, Atomic Structure, ...
Principles Related to Practical Chemistry)
- Maths: 14 units (Sets Relations and Functions, Complex Numbers, ...
Trigonometry)
scripts/reorg_nta_units.py maps upstream subtopics by keyword; 73
stragglers placed manually. Removed the 24 hand-written demo questions
(Q1-Q24) from the live bank — trivial one-liners that diluted the
difficulty pool. Bank is now 9,813 pure PYQs (2002-2025, all
exam='jee-main' verified from source metadata).
