at what marks in jee mains and advanced I was in iist TRIVANDRUM in aerospace engineering category as per obc

Hello,
Please note that admissions to IIST Trivandrum are done on the basis of JEE Advanced score and ranking.
To be eligible for admission into Btech aerospace engineering at IIST Trivandrum, you need to score atleast 18% marks in JEE advanced in aggregate and atleast 5% marks in each subject of PCM.
The cutoff of IIST B.Tech will be the minimum score that candidates will require to get admission into the institute.
Please visit this link for detailed cutoff information for IIST Trivandrum IIST Trivandrum cutoff eligibility

Hope it helps