Science

Yes, you are eligible.

When you enroll in physics for your graduation, you will get your degree as B.Sc (Hons)
When you opt for PCM combination, you will get a degree of B.Sc.
There isn't any major difference between them as Honor's students also study some basics and major parts of main & subsidiary subjects.
Universities have different criteria for this, as in Banaras Hindu University, you have to choose the combination of three subjects whereas for Delhi University, you have to choose only one single subject for graduation.
As both are graduation degrees, both are equal and there isn't any advantage for a particular one.

Yes, you can pursue event management with commerce without maths. The minimums core that you should get is 60% and then appear for entrance tests.

Shikha, B.Pharm is going to be a good option as it offers you the option of flexi hours. As for LPU, LPU is a brand in itself. It has been ranked as one of the best universities by various agencies on the basis of its infrastructure, its placements, its pedagogy, its faculty, to mention a few.
The university leaves no stone unturned to shape the future of its students. It is definitely the first choice of both national and international students.

Explanation is just for your reference to make you understand the concept. When you talk about 12th board physics the question paper consists of derivations and problems to its tip and very less questions on explanation. But chemistry part 1 paper is some what like physics but part 2 has major theory which you can prepare by making charts for organic part. But you must read the explanation too just to clear your concepts. Don't by heart it.
Thankyou.

If you take B.Sc in computer science as your subject then you will have to study statistics, electronics, maths and of course computer science.

Job Opportunities for B.Sc in Biotechnology Graduates
Just about all industries take in students of biotechnology. For this reason, the career prospects for Bio technologists are quite high nowadays. Multiple career opportunities are available for professionals of biotechnology. Some of the areas where they can get jobs include:
Agriculture Industries
Agro Based Industries
Aquaculture Industries
Chemical Industries
Colleges And Universities
Environmental Specialist
Food Processing Industries
Media Houses As Science Writer
Pharmaceutical Companies
Research Laboratories

You've got this rank in which exam?