How much previous years question papers should I solve to get perfection and very good marks in biology 320+ ?
For NEET ranking BIOLOGY score plays a important role. Rather than solving previous years question papers , read each and every topic. Firstly try to complete entire NCERT textbook including differentiate between type of questions , every note . If you complete reading of entire NCERT , revise it again and again . Solve more multiple type of questions on every topic.
All the best .