Hello Mahak,
Hope you are doing good.
So as per your query, No first of all it is not possible to do dual degree with just 143 Mark's. It's really difficult. Also, only to do a course in BITS Pilani, one need to get more than 200 Mark's, that too if one has reservation then it might be possible.
Secondly, as your score in mains is not that good, it will be better for you if you opt for any of the private colleges which are accepting the Jee Mains score, because you are even having more percentage in Board exams that is 91%. Therefore, the universities like LPU University, SatyaBhama university, Ramaiah College, VIT Bangalore etc.,.
Good luck!!

BITS Pilani

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