Hi Gowtham,

You have obtained 70,000 rank in JEE Main and are interested in pursuing Instrumentation Engineering. It would be difficult to tell you your exact possibilities without knowing your category. However, if you do not belong to some reserved categories then chances are very less that you will get Instrumentation Engineering in good colleges, at least in colleges like NITs and IIITs. And if not you might have some chances. You can use the JEE Main college predictor tool by clicking on the following link to know your college options based on your rank and category. https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

Hope it helps you.