Hello Sajitha,

The candidates will have to satisfy at least one of the following two criteria for admission to IITs:

• The candidate should have passed 10+2 or equivalent examination with an aggregate of at least 75% marks.For SC/ ST and PwD candidates, aggregate of minimum 65% marks.

• The candidates should be within the category wise top 20 percentile of successful candidates in their respective 12th standard (or equivalent) board examination.

• The scores secured 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:Physics,Chemistry,Mathematics,A language,another subject with highest marks other than the above 4.

You can however take admission in the

following colleges on the basis of your JEE

Advance Rank.

• All the IITs 
• ISM - Dhanabad
• IISc, Bangalore
• IIPE, Visakapatnam
• All the IISERs
• IIST, Thiruvananthapuram
• RGIPT, Rae Bareli

NITs accept only JEE Mains rank.So,you can even go for it.

To know more about admission through JEE Advanced Eligibility criteria,go through https://www.google.com/url?sa=i&source=web&cd=&ved=2ahUKEwiqsJKYtIviAhWiW3wKHUGaARcQzPwBegQIARAC&url=https%3A%2F%2Fengineering.careers360.com%2Farticles%2Fjee-advanced-eligibility-criteria&psig=AOvVaw0GRYwVwCHpVpHWeeYmQCih&ust=1557386831337879

Best of luck!!