Please consult a Psychiatrist. Take your mother also to the doctor so that she can also be counselled.

Hi Please understand its a serious concern I There can be lots of unsettling emotions or conflicts which needs to be addressed So that your personal life and study life doesn't get affected Consult with me or any psychologist for therapy and counseling online or in person

Good evening, These anger outbursts could just be your unconscious defence mechanism to sort out sone conflicts. It may not be easy to understand and probably your mother is the closest person you have, so you feel its ok to show anger there. But this might not always be appropriate. See a therapist to figure out what can help you in the long run instead of looking at short cuts. Getting help will also help you focus n concentrate better for exams. You have done it once , you can do it again. Hope this helps. Good luck 

Hi Anger is an emotion. You are going to extreme of that.  .so i suggest Medication n behavioral therapy for this ..