Degree

No, you won't be allowed to admit in degree without passing class 12th. Clear those subjects in Supplementary exams, and then only you'll be eligible to pursue degree.

Hi,
At the time of admission, you need to produce your Bachelor's degree (provisional for current batch students). If you are certain that you will get the degree (upon clearing your backlogs of course), you can take the entrance exams like CAT, XAT, MAT, CMAT, SNAP, etc.

No. But B.Tech and BE are basically the same programmes with the same value. There isn't much difference.

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Yes, you can if you have done UG from a recognised university.

The fee for Bachelor's degree in hotel management is between INR 98.3-1.06 lacs per year.
It is affiliated to Annamalai University approved by UGC.

MBA in pharmaceutical management is a very narrow domain. I would suggest that you go for a general MBA as your graduation degree does not play an important role in MBA so even if you have done B.Sc in Hospitality management still you can pursue MBA in Marketing, HR, etc. Try going through this website https://www.shiksha.com/mba/ranking/top-mba-colleges-in-bangalore/2-2-0-278-0

Go for Masters in hospitality and hotel Management, as you have done your graduation.

No, LLB is not done without any degree.

I don't think you can pursue two regular degree simultaneously from Mumbai University but you can do professional course with degree. According to UGC, students are not allowed to do two regular degrees at the same time. According to me two regular degrees put burden on you and attendance issues also occur, so it's better to do a single regular degree.