I cleared my 12th exam from CBSE board in 2011 with very good marks in English and Biology but low performance in Physics,Chemistry, Maths. Although I secured an agg of 65% in PCB . I’ve been preparing for medical entrance since two years now with no success in MBBS and now I heard that just like JEE even medical entrance is going to give importance to 12th marks.Can I give the improvement exam or the private exam in 2014?? As my only goal is MBBS I want to know whether i'll be eligible for it the 4th time!! please advice