Hi Yatharth, definitely we can suggest some books for joint entrance examinations that will definitely be helpful in your preparation.

maths- "CENGAGE Publications", definitely one of the best books for IIT JEE preparation.

physics- for brushing up your theory, definitely go for "RESNICK HALLIDAY". "HC VERMA" and "IL IRODOV" are good for solving basic and advanced level questions respectively.

chemistry-"NCERT" is more than enough because questions are asked from Ncert in JEE or any other UG engineering entrance exams.

Have a nice day and best of luck for preparations!!