B.Sc

Following are major career in Science other then MBBS and engineering:
(a) M.Sc-PhD in Science subjects such as Physics Astrophysics etc open lot of research and teaching opportunities which are well paying and full of job satisfaction.
(b) M.Sc Computer Science, M.Sc Maths graduates have good opportunities in IT Industry.
(c) Bio-Technology and B.Pharma is also full of opportunities.

I don't think there is any specialization called agriculture marketing. You should go for M.Sc agriculture. That will give you more depth knowledge in agriculture subject. You will get a thorough understanding of agriculture.

All subjects options available in B.Sc are equally good. B.Sc physics opens more opportunities in comparison to other branches of science.

Why you want to pursue both the courses at the same time?

Hi,
Here is the list of colleges offering B.Sc in Varanasi (Banaras):
https://www.shiksha.com/science/colleges/colleges-varanasi?sp[]=15&bc[]=26
Also, find the link below for the best colleges in Varanasi offering BA:
https://www.shiksha.com/humanities-social-sciences/colleges/b-a-colleges-varanasi
Feel free to raise more queries.
All the best.

List of Courses after B.Sc Biotechnology:
Master of Science in physiotherapy
Master of Science in Bio Medical Science
Master of Science in Bioinformatics
Master of Science in Microbiology
Master of Science in Geoinformatics
Master of Science in Organic Chemistry
Master of Science Pharmaceutical
Master of Science in Chemistry
All the best.

Hello Umar,
Yes, you can easily get admission in B.Sc course in any college of your choice but you just need an affidavit in which you will have to mention the reason for gap of around 4 years which you have taken in your studies. You will need to submit this affidavit in the college along with all other documents. You can easily get an affidavit outside the court.

Kindly refer the below-mentioned link:
https://www.shiksha.com/it-software/colleges/b-sc-colleges-kota