Hi Nandini! As per the previous years trends, it seems that you don't have any chance. But I would say that as cutoff changes every year so you should try in the special rounds of the Counselling.

Getting NIT is bit hard job but IIIT  special round you maybe get admission, So you may be applied for it you have some chances that you may get. So if any chances if you may not get it so please don't be disappointed and seek out for some another good Institute.

All the best.