Eligibility criteria for appearing in MBA exams like MH CET  is to have minimum 50% percentage in 10th 12th and graduation for general category students and 45% for SC/ST category students. 

As you have less than 50% in graduation then unfortunately you are not eligible for pursuing MBA degree.

But yes you cam give XAT exam which does not have as such marks restriction. Although later you might face trouble when most of the colleges demand greater than 50% in graduation.

You can still give it a try and score very high percentile that might help you in ending in a good college.

You also have an advantage of being a non engineer. Because of this colleges give you some extra marks in order to promote diversity in their college. Also generally you get a call at a little lower percentile than the engineering student of same category.

But in order to take the use of this perk in getting admission in top college, you need to aim for a very high percentile.

All the best!!