Hello Aspirant,

The candidate should satisfy at least one of the following criteria to get Admission in IIT's/NIT's/IIIT's:-

• Candidate Must have secured at least 75% aggregate marks in the Class XII (or equivalent) in Board examination. The aggregate marks for SC, ST and PWD candidates should be at least 65%.  
• Candidate Must be within the category-wise top 20 percentile of successful candidates in their respective Class XII (or equivalent) board examination. 
• The marks scored in the following five subjects will be considered for calculating the aggregate marks and the cut-off marks for fulfilling the top 20 percentile criterion. (a) For B.E./B.Tech. programs i. Physics ii. Mathematics iii. Anyone of Chemistry, biology, biotechnology, technical vocation subject. iv. A language (if the candidate has taken more than one language, then the language with the higher marks will be considered) v. Any subject other than the above four (the subject with the highest marks will be considered)

Hope this helps.

Good Luck.