Which important topics do I need to study in class 12th in order to qualify engineering entrance exams?

Hello Shivraj, You need to be very clear about all the concepts of Physics and Mathematics. There's no escape for those subjects as far as engineering is concerned. If you are thinking about chemical engineering, petrochemical engineering, etc. Then you have to dedicate yourself towards Chemistry a

Below mentioned are some of the topics to be focused: 1. Nuclear physics. 2. Organic and Inorganic chemistry. 3. Calculus in mathematics