JEE

It is difficult to tell you the exact about your admission possibilities but as per the previous year cutoff as OBC category the chance seems less to get a seat in walchand college of engineering sangli .
however you can try for state counseling like Punjab, Haryana, MP, Etc.
To know your other best admission possibilities of Institutes and branches in JOSSA & State counseling as per your percentile

Yes there is very much chances to get good branches in NIT on these marks.

Some colleges like IIIT Hyderabad take their own admission test you can apply for that, or else no other option is available.

Yes, you can appear for JEE also if you have taken Physics Chemistry Maths as well as Biology in 11th and 12th.

Data Science is provided by IIT-Madras; JEE eligibility is not necessary. You can study of a data scientist in IIT without JEE. It is a 4 year degree course provided by the IIT Madras.

Keeping the previous years of trends in consideration, You can get CCEW Pune for B.Tech IT under the asked category.

B.Tech (Hons. ). In ICT with minor in Computational Science :- It's cutoff rank of JEE Mains is around 8.2k so scoring 99.2+ percentile would be a safe score to get enrolled in ICT+CS branch at DAIICT. B.Tech in ICT :- It's JEE Mains cutoff is around 12.5k, so scoring around 98.8+ percentile is a safe score for getting admission in the branch. B.Tech (Mathematics and Computing) :- As this course is introduced in DAIICT from year 2020, it's cutoff of JEE Mains is around 15k-16k, so scoring 98.4+ percentile in JEE Mains is a safe score.

Yes, you can get Computer Science Engineering B.Tech in JAC Delhi counselling. Your rank is within the cut-off range for the college and you can get admission in the college and this is placement oreinted college;. .

Yes, you can get admission in CSE at JAC Delhi through JEE Mains Counselling with 91000 AIR rank in JEE Mains Defence Ward Priority 6 OBC category. The cut off rank for CSE in JAC Delhi for OBC category in JEE Mains Defence Ward Priority 6 is around 91000.