B.Tech

You may not get a seat for B.Tech. in aerospace engineering at the Indian Institute of Space Science and Technology, Thiruvananthapuram, with this rank.
This is because in previous years, the closing rank has been around 850 (general) and 324 for the OBC NCL category in aerospace engineering.
Due to the high number of candidates applying for this branch, the cut-off remains high as only 60 seats are available per batch.
However, you may have a chance to get admission in the Avionics Engineering branch. This estimate is based on previous-year data, and this year's results may differ.

You can take admission directly or through JEE Mains.

There are many ways to achieve admission in Harvard University but there will be tight competition for seats in Harvard since all the students around the globe will be dreaming of pursuing a degree in Harvard University. Harvard also provides distant education facilities for students who cannot afford to study regular mode study method. The university also provides students who are intellects in specific subjects and they are covered by the scholarships provided by the Harvard itself that covers almost all expenses during the academic year.

Cutoff rank was 30000

Maybe, if it was possible, it will present in counselling process.

If you are talking about government colleges then go for IITs and NITs and if you are talking about private university which I think so then there are many good private university and colleges for B.Tech Computer Science like BITs (Pilani, Goa, Hyderabad), VIT Vellore, SRM university, LPU Jalandhar, chitkaara university, etc.

Hello Anjali hope you are doing well, Definitely you can write NIOS senior secondary Biology exam even though you have completed my +2 PCM in 2021-2022, and studying B.Tech,1st year. Hope it helps you.

Yes, as you mentioned the basic requirement to purse B.Tech is having PCM but now one more requirement is needed is to appear for JEE Mains exam so that you can get the college and the college can provide you with the best branch for yourself. As B.Tech will provide all the technical skills needed in the industries with enhancement in the personality of the individual.