BITSAT

For BITSAT 2025, the eligibility criteria typically require you to have a minimum of 75% aggregate marks in 5 subjects (including Physics, Chemistry, Mathematics, and English) in your 12th board exams. as you have 6 subjects, including one optional, you do not necessarily need to take an improvement for all 6 subjects.

Here's what I think you should consider:

1. If your aggregate percentage in the 5 main subjects (Physics, Chemistry, Maths, and English + one additional subject) is at least 75%, you won't need an improvement in all 5.
2. If your percentage is below 75% in the core 5 subjects, you may need to make an improvement in the required subjects to meet the eligibility criteria.

Candidates must fulfil certain academic requirements in order to be eligible for the Birla Institute of Technology and Science Admission Test (BITSAT)

You must have passed the 12th grade with majors in mathematics, physics and chemistry from an accredited board in order to be eligible.

Minimum Score Needed:
a minimum of 75% in maths chemistry and physics combined (PCM).
a minimum of 60% in each of the following subjects: maths, chemistry, and physics.
Considering your scores:
(71 + 75 + 73) = 219 / 3 = 73% is the PCM aggregate which falls short of the 75% threshold.
The 60% requirement is met by the individual subject results (Physics: 71, Chemistry: 73 and Maths: 75).
Because your PCM aggregate is less than 75% you are therefore ineligible for BITSAT