List of all Important topics with maximum weightage below which can help you in scoribg 300+.

https://engineering.careers360.com/articles/bitsat-exam-pattern

Students must focus on exam pattern thoroughly and solve maximum mock exams to score big. Analyse all repetitive mistakes and revise those areas again and then appear again. Sokve out all doubts from coaching institutions like Allen which is best recommended for BITSAT . 

Class11th syllabus in NCERTbooks is equally important because it does jave good weightage. List of all recommended books for preparation below. 

https://engineering.careers360.com/articles/bitsat-syllabus