B.Sc

Below are the entrance tests.
1. The Neotia University (TNU) - Conducts TNU entrance exam.
2. Written Test GATE
3. Amity University Kolkata, conducts their own entrance test hence eligible candidates need to appear for the English language test conducted by the university. There are few other entrance exams for integrated B.Sc. Plus M.Sc. Course.

Yes, reservation is something you can enjoy all over India. They will value it of course. If you belong to reserved category, you will get relaxation in marks for B.Sc and M.Sc. Regards.

Hi Nihar,
You can refer https://www.shiksha.com/university/tezpur-university/tuee-exam-question-papers.

Hi Shruti,
Yes, you are eligible. You can find a detailed information on this web link https://www.shiksha.com/aviation/course/aircraft-maintenance-engineering-mechanical-hindustan-aerospace-and-engineering-sha-shib-group-baner-pune-290615

For admission in B.Sc Microbiology, you must score above 70% marks.

Hi,Candidates who have completed their Bachelor's degree in Science/ engineering/pharmacy/ medicine, obtained from a recognized university are eligible for the above course. Thanks.

Hi,
Reputed institutes rely on merit based admission process. They conduct relevant entrance exam and/or interview to select deserving candidates. Minimum qualification required is 10+2 Science stream pass from a recognized board. Minimum marks requirement may vary from one institute to another. Generally, it is around 45-55% aggregate marks. Thanks!

Since you are doing an integrated course, it will take 4 years .Actually, you are benefited in this, as you have integrated B.Ed, as I can see here. You can easily apply at schools at primary and middle school level, if you want to teach or like it .As you know B.Ed had become 2 years course few years ago. You are not losing any way. Be confident on what you do. All the best.