Theory and Reference Books for Physics, Bio, and Chemistry:

Physics:
1. Concepts of Physics by H.C. Verma
2. University Physics by Young and Freedman
3. Fundamentals of Physics by Halliday, Resnick, and Walker
4. Problems in General Physics by I.E. Irodov
5. Optics by Ajoy Ghatak

Biology:
1. Biology by Campbell and Reece
2. Molecular Biology of the Cell by Bruce Alberts
3. Genetics: A Conceptual Approach by Benjamin A. Pierce
4. Human Physiology by Sherwood
5. Evolution by Douglas J. Futuyma

Chemistry:
1. Physical Chemistry by P.W. Atkins
2. Organic Chemistry by Morrison and Boyd
3. Inorganic Chemistry by J.D. Lee
4. Concise Inorganic Chemistry by J.D. Lee
5. Principles of Biochemistry by Lehninger

Previous Question Papers:
1. NEET Previous Year Question Papers by EduRev
2. NEET Previous Year Solved Papers by Arihant Experts
3. Target NEET 2021: 15 Years Solved Papers by Disha Publication
4. NEET Chapter-wise Solved Papers by Disha Publication
5. 32 Years' Chapterwise Solutions for CBSE AIPMT & NEET by MTG Editorial Board

Explanation in Detail:
To prepare for NEET, students must have a thorough understanding of the concepts of Physics, Biology, and Chemistry. Here are some of the best theory and reference books for these subjects:

1. Physics:
Concepts of Physics by H.C. Verma is a highly recommended book for NEET aspirants. It covers all the topics of Physics in a comprehensive manner and has a large number of solved examples and problems. University Physics by Young and Freedman is another good book for students who want to gain a deeper understanding of Physics concepts. Fundamentals of Physics by Halliday, Resnick, and Walker is a classic textbook that covers all the topics of Physics in a concise and easy-to-understand manner. Problems in General Physics by I.E. Irodov is a book for students who want to solve challenging problems and improve their problem-solving skills. Optics by Ajoy Ghatak is a good book for students who want to learn about the principles of Optics in detail.

2. Biology:
Biology by Campbell and Reece is a widely used textbook for Biology students. It covers all the topics of Biology in a clear and concise manner. Molecular Biology of the Cell by Bruce Alberts is a comprehensive textbook that covers the molecular basis of cell structure and function. Genetics: A Conceptual Approach by Benjamin A. Pierce is a good book for students who want to learn about Genetics in detail. Human Physiology by Sherwood is a book that covers all the aspects of Human Physiology in a comprehensive manner. Evolution by Douglas J. Futuyma is a good book for students who want to learn about the principles of Evolution in detail.

3. Chemistry:
Physical Chemistry by P.W. Atkins is a widely used textbook for Physical Chemistry students. It covers all the topics of Physical Chemistry in a comprehensive manner. Organic Chemistry by Morrison and Boyd is a classic textbook that covers all the topics of Organic Chemistry in a clear and concise manner. Inorganic Chemistry by J.D. Lee is a book that covers all the aspects of Inorganic Chemistry in a comprehensive manner. Concise Inorganic