Hello aspirant,
I am here for helping you.
As per your doubt about taking admission in college of Bangalore in the month of August and you have failed in your class 12 from Maharashtra board .
So, sorry to say but you can not take admission firstly you will have to pass your class 10+2  and then you can apply and if you are thinking to pass it via compartment exam and then you will apply so, chances of getting admission are still less here and also till then admission will have been closing so, you will have to wait for next year.
I hope it will help you........  .......
For more queries you can upvote me and can ask in the comment box.........
Best of luck.