Hello Siddhirakshe,

To answer your question, going by the NCERT, there are 29 chapters in Physics for NEET syllabus which includes 15 chapters from class XI syllabus and 14 chapters from class XII syllabus.

Likewise, NCERT mentions 30 chapters for Chemistry syllabus, out of which 14 come under class XI syllabus and 16 come under class XII syllabus.

Biology NCERT syllabus for NEET includes 38 chapters, 22 of which belong to class XI and 16 of which belong to class XII.

Hope this answers your query.