B.Sc. (Hons)

I am sure, B.Sc. Hons psychology will have more scope that B.A. The studies will include scientific topics and subjects with specialisation in the study of mind, behavior and psyche of the human. After graduation in B.Sc. Psychology, you can expect job offers of salaries from INR 12 to 16K, per month. The salary goes beyond further as and when you get enhancement in your skill set and experience.

Eligibility criteria for admission in B.Sc(Hons.) in Food Technology: 12th with mandatory subjects Physics, Chemistry, Mathematics/ Biology/ Biotechnology.
Candidate must have secured minimum 50% marks in English and aggregate 55% in mandatory subjects.
For details visit: https://www.shiksha.com/science/course/b-sc-hons-in-food-technology-shaheed-rajguru-college-of-applied-sciences-for-women-mayur-vihar-1-delhi-8345

No, your percentage is too low so you won't get any seat for B.Sc(Hons.) Try for some other courses. The cutoff is hardly 75 so your percentage is too low. You don't even have 1st division so not a chance. Nowadays, 60% for honors is mandatory, so I recommend you to give improvement of 12th and score high percentage so that you can get a seat in some good college and with your own subject selection or go for entrance test so that the percentage doesn't matter.
Good Luck.

You can buy a guide book by Shafique.

Please visit the below link :
https://www.shiksha.com/science/colleges/b-sc-chemistry-colleges-india

Yes, the placement record of BHU is very good, you would definitely get a good placement there. Many companies visit BHU campus to offer placement offers to the students.

Yes, it is available.

Yes, but only the general knowledge of geography are asked.