Can I get admission in IIIT Bhubaneswar with an OBC rank of 71500 in JEE Mains and having a green card?

No, it's not possible because it is very exceptional to get IIIT Bhubaneswar with 83 percentile in JEE Mains because the IIIT Bhubaneswar cut-off are very high for admission. It generally requires 90 percentile but if you are from SC ST category, you may have a chance to get a seat till the last round of seat allotment. But you can try for admission in IIIT Baghalpur, Kottayam, Ranchi they have relatively lower cutoffs also there are some NITs which offers admission with lower cutoff ranks.

No, you cannot get admission IIIT Bhubaneswar because admission in IIIT Bhubaneswar is done through the JOSSA counselling and to be eligible for that you must have 75%+ marks in your class 12th ( PCM).

IIIT Bhubaneswar campus is situated in Gothapatna on the outskirts of Bhubaneswar. CCTV cameras installed everywhere on the campus. At every exit and entry point there are security staff restrict the entry of anyone who does not have an entry card or prior permission. 

IIIT Bhubaneswar desires 100% attendance. Exception can be provided to students on account of late registration, sickness, or other such contingencies. To appear in exams, 75% of attendance is needed. A student with less than 75% of attendance in a programme during a semester will be awarded a ‘W’ Grade in that programme irrespective of his/her performance in the exams/tests.

IIIT Bhubaneshwar arranges various fests and events for students. Recently, the IIIT Bhubaneshwar arranged the annual cultural fest “Advaita”. A lot of students belonging to various countries and states take part in this fest. Another popular fest arranged by the college is the Techno Cultural Fest. Every year, the college arranges fests including Annual Technical Fest, Annual Athletic Fest, Film Fest, and others.