Hi Neer, after 12th the first and foremost thing to get admission into any of the IITs is the IIT-JEE exams. IIT JEE exams are divided into two which are Mains and Advanced. If one clears both the exams, one is eligible to be into IITs. But if one clears Mains eligibility but fails to clear Advanced exams eligiblity set by IITs, then he/she can settle at NITs or any other colleges.
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