Dear Deepak, Fill the application form of CENTAC 2018 with valid information and submit it. You can do it in both online and offline mode. Admissions will be done based on the 12th standard exam scores for Puducherry and Tamil Nadu candidates and JEE Main 2018 scores for other state candidates. An aggregate of minimum 45% marks (40% marks for OBC/ BCM/ MBC/ EBC/ BT/ SC candidates) should have been secured in Mathematics, Physics or any one of the following optional subjects: Chemistry/ Bio-Technology/ Computer Science/ Biology (Botany and Zoology). To know more about eligibility criteria, application process and counselling of CENTAC 2018, check the following links: https://engineering.careers360.com/articles/centac