with a rank of 6200 in advance and approx 8000 rank in mains (according to rank predictor) which collage should i opt for ?

Swapnil you have a good rank and you can get into many good universities so you should browse for such universities that work on the soul purpose of providing there students with good education and have a good placement record as well as provides their students with a wide platform and great exposure. Some universities that i would like to suggest are Global Open University, Dimapur.............Lovely Professional University, Phagwara................Alliance University,Bengaluru..............KIIT,Bhubaneshwar etc.