Science Eligibility

A minimum of 50% is required.

Yes, but not in all school, because there are some high standard school that give admission in Science stream to the students who scored only above 8.0 CGPA.

Unfortunately, you are not eligible for taking admission in BA Philosophy, because of eligibility criteria. Class 12th with arts is compulsory for taking admission in BA Philosophy course.

There is a programme B.Ed in biological Science and for that you need to have completed graduation (B.A. / B.Sc. / B.Com. ), from a recognised university. A minimum aggregate score of 50% (45% for SC/ST candidates) at the level of graduation.

Please refer to the link below:
http://www.delhiflyingclub.org/eligibility-criteria.html

The eligibility for NEST, is candidate should have passed class XII in Science stream from a recognized board in India with at least 60% aggregate marks (55% for SC/ ST/ PwD category candidates). How much have you scored in English?

Hello Ishan,
There is no need to repeat your 12th since you passed in all the subjects, you can prepare for the improvement examination next year along with your JEE preparation, this will save your 1 precious year and yes will be eligible for IIT-JEE.
Please refer to this link for more insights:
https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://www.jeeadv.ac.in/&ved=2ahUKEwilgrHGx8rZAhXJK48KHVdXDM4QFjABegQIBRAB&usg=AOvVaw155lq7Xi82pAxZ5QQ7WUr9
Best of luck.

Yes, you are eligible for B.Sc in forensic science provided your technical base related to physics, chemistry and biology must be clear.