After completing Bachelor of Arts. I need to complete MBA. Is it possible?

Yeah, it is but you have to secure good percentile in your entrance exams .

Yes, its 100% possible. All you need to do is clear the entrance exams such as CAT, MAT, CMAT, XAT, etc.

Yes, why not. marks in grad should b above 50%. Compete exams like cat, mat, xat, atma and others. Then on the basis of that marks, u need to apply different bschools as per your choice. They will call u as per your position in their respective merit list and u wl b asked to appear gd/pi round. then