Science

Just start studying it from the basics. You will understand the basics, your interest will start developing.
Good luck.

Yes, you are eligible for M.Sc in physics.
Good luck.

Both the courses are best in their own place. It depends on your interest. More than 50+ colleges offer economics honours. But only 10+ colleges under DU offer statistics (Hons). I would suggest you do statistics (Hons) because if you do this course and get good marks and knowledge of this subject then you will get easily placed in an MNC.

For this course, BHU conducts an entrance exam which is followed by the interview process. The admission is fully based on your performance in the entrance exam. For more information, visit BHU's official website.

Go for B.Sc Textiles and Apparel from SNDT because for BM, you need to choose some a very good college like Xavier's and admission process is closed for it now.

10+2 passed in any stream (science, commerce or arts) is the minimum educational qualification required. Although, there is no specific entrance examination for tour and travel management.