Het !

I can see that you want to clear your concepts and also want a book best for JEE , so the best book for bpth the purposes is modern ABC by dr.sp jauhar. It is not such a big book covering extra things. It onlg has the topics which are really essential. Also , at the end of every chapter , there are some questions which are highlg benefical  for competition level exams like JEE , NEET etc. And its language us also easy to understand  . So , you can definitely go for this book.

Hope it helps!