Hi aspirant,
You are preparing for BITSAT examination. Hence it is necessary for you to study well You are following HC Verma for Physics. You should continue following this and when you are done with this you can switch to DC Pandey and Fundamentals of Physics by Halliday, Resnick & Walker.
In Chemistry NCERT is holy bible for you. You should study it thoroughly and ensure that not a single line is left unstudied especially in Organic and Inorganic chemistry. After doing this you can study from MS Chouhan book.
In Mathematics apart from RD Sharma and since RD sharma is not much sufficient you should follow other books like that of SL Loney, IA Maron, Cengage etc depending on topics.
Hope that I answered your query.
All the best.
Eligibility | Application | Exam Pattern | Preparation Tips | Admit Card | Result | Cutoff
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile