Hello Zoya
With this percentage in 10+2, you are not eligible for JEE-MAINS, BITSAT or other prestigious private colleges.
However you can try for some state Universities offering Undergraduate engineering courses such as AKTU or IPU.
As for both of them, the minimum eligibility criteria is near 55% in PCM.
If you fulfill that criteria, you can take admission in any of their colleges after appearing for CET as the admission is given on the basis of merit obtained in these entrance exams.
Or you can try for private colleges such as Amity and Sharda.
Good luck