i am expecting my rank in jee advance around 21000 will i be able to crack iit.

My best wishes are with you dear, but let the result be declared as sometimes the expectations do not come to be true, so afterr the declaration of the result only anything may be declared. At present you may go on a virtual tour to some chosen college/university websites and get to know the requisite information, you may consider – Amrita School of Engineering, Coimbtore,...........Lovely Professional University, Phagwara,.......Banasthali University, Banasthali,...............BHU,Varanasi