Tezpur University

It differs from college to college e.g. for JBIMS, cut-off is 99 percentile and it's comparatively low for Great Lakes.

Yes, in every university, you have to first do bachelor's then you are eligible to do masters. The terms and condition of the university clearly suggest you to first get your bachelor's done then apply for masters. They even ask for marks in your bachelor and degree too.

Hi,
Admission to all integrated UG programs, B.Ed programme is granted on the basis of marks scored in the Entrance Test conducted by the University, Tezpur University Entrance Examination (TUEE).
You can also see below link:
https://www.shiksha.com/university/amp/tezpur-university-269
Thanks.

In taking M.Sc physics you should have studied physics for 3 full years in graduation then you can seek admission in M.Sc physics. Chemistry is not a necessary subject it is counted as an ancillary subject in B.Sc. So don't worry you will get M.Sc physics if you have B.Sc physics degree you can apply.
All the best.

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.