Hi meghanath . Well for a general category student to get 73 percetile is not a good score so its impossible for you to get admission into any national institute of technology even not in any low nits because you had not even qualified jee mains examas per your general category rank . So i would suggest you to take admission into any private institutions or give a year to jee mains again if you have dream to get admission into any national institute of technology.to know about the colleges you can get admission into you can use this link below .

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

Hope it helps