Neet exam deals with three subjects Biology chemistry and physics. There are a total of 180 MCQs, with a 3-hours time duration. For each correct response, 4 marks are awarded to the candidates and 1 mark is deducted for every incorrect response. The weight age of biology is maximum and of Physics and Chemistry are same. So as per the answer of your question you need to study all the three subjects thoroughly to get admission through Neet in MBBS course. At first I would suggest to study NCERT e and then go for advanced books. Neet is one of the toughest entrance exam after 12th and nowadays it has greater competition level. Here I have attached a link where you can get the all the information regarding how to prepare for Neet exam. https://medicine.careers360.com/articles/how-to-prepare-for-neet Hope it would be helpful.