Varshini, the weightage per each chapter and syllabus has been prepared based on the analysis of previous years' question papers. This has been prepared with the help of our subject matter experts, and toppers of previous years. You can check that at: https://medicine.careers360.com/articles/neet-chapter-wise-weightage-and-important-topics But if you want something to prepare from and be assured of being qualified, our NEET knockout series may help you. Have a look at it at our page: https://learn.careers360.com/knockout-neet-may/