B.Sc

Kindly visit this link:
https://www.shiksha.com/science/colleges/b-sc-food-nutrition-colleges-india

Yes, Jadavpur University offers B.Sc in physics. You can know more about the admission procedure from here:
https://www.shiksha.com/science/course/b-sc-in-physics-jadavpur-university-jadavpur-Kolkata-273123.

I would suggest you to continue with your B.Tech as B.Tech degree has more value than B.Sc(Hons.)

Hi, Physics+Chemistry/Computer Science+ Mathematics. These three subjects marks will be added for B.Sc courses. For more information regarding admission process visit Delhi University website.

According to my knowledge, B.Sc in computer science is more preferable. You should join this course in order to get a good job after graduation.

Yes, you can fill the form for nursing. You are eligible for this.

https://www.tcyonline.com/exam-preparation/801187/b-sc-agriculture
Just visit here.

Hello Deva Darshini, Your cut off is too low to get admission at TNAU. Since you belong to BC category, you should have atleast 50 percent in the 4 subjects namely PCMC or PCMB. You may try your luck at the counseling. The link below gives you the information about TNAU admissions :
http://www.tnau.ac.in/admission.html.

A microbiologist can earn a salary ranging from Rs 1,20,000- Rs 8,30,000 per annum. The microbiologist post-graduation can work in a smaller domain with a minimum of INR 2.5 Lacs to INR 3.5 Lacs.