Hello

For BITSAT eligibility , you need at least 75% aggregate in PCM and 60% in each subject (Physics, Chemistry, Mathematics). If you improve your marks through a compartment/supplementary exam and meet the required percentage, you should be eligible .

However, BITSAT admissions close by July and if your supplementary exam results come in late July or August , you may not be considered for that year's admission .

Hope this gives you the clarity you need .