Can I go with BBA after my 12th and I think that I will get definitely 92% in my 12th and also I got 91% in 10th.So which line is good for me to take after 12th?

According to the recent trend we see, most students after completing their graduation course , move on to pursue MBA( Masters of Business Administration), which is currently the most jobs provider degree course , producing sound management professionals. So, rather than completing your graduation in a different field (ex-b.tech) and then moving on to MBA and changing your industry, starting with BBA is a best option . However, in the corporate sector ,for  getting a good pay job offer, just your BBA degree won't help you much. If you are planning higher studies in Business Administration ( MBA), surely go for BBA. All the best for your future !!