JEE (M) syllabus covers BITSAT significantly. But if we compare the overall question pattern, then the BITSAT exam is quite tricky due to the number of questions you need to solve.
To prepare for BITSAT you can follow the books suggested below.
PCM: If you are preparing thoroughly for the JEE exams, then there is no need for extra preparation for PCM for BITSAT.
English and Logical Reasoning:
Clear Basics:
With preparation, you also need to practice well to score better marks.
Besides these above-mentioned suggestions, you should also solve the previous year’s questions. It will help you get acquainted with the exam format and question pattern.