Science

Dear Sachin,
If Maths is your plus point then you can pursue plain B.Sc with Mathematics as your main subject. Along with this, you can prepare for UPSC. You can face one of the best exams of our country for civil services after completing your graduate degree. Don't let financial weakness become a

There are less chances for you to get CSE, but you can get ECE with that rank.

Yes, you can get CSE and ECE in Sastra, quite easily with this rank.

Following are your top options:
RTU
JECRC
SKIT
MBM.

Yes, you can apply for B.Sc in Nursing. You are eligible for this.
Good luck.

According to me, for question papers, you should check their official website, you can get question papers there.
Good luck.

Yes, you can get admission for B.Sc in a government college with 70% marks but you will face problems in finding admission in DU north campus as their cut-offs are very high, chances are there to get admission in DU south campus and you can get admission in government universities located outside of

Yes, of course, as these are great subjects to learn and study.