Syllabus difference
Syllabus is 95% overlapping. Advanced goes deeper in a few chapters (rotational dynamics, advanced organic mechanisms, multi-concept calculus problems).
Pattern difference
Main: 90 questions, 180 minutes, single-correct + numerical. Advanced: 54 questions across 2 papers, 3+3 hours, mix of single-correct, multi-correct, integer, matching formats.
Difficulty difference
Advanced is substantially harder. Main tests speed and formula fluency; Advanced tests problem decomposition and non-standard thinking.
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