Hi aspirant

hope you are doing absolutely fine

ALL INDIA QUOTA is 15 % total. So in this as well there is reservation for all the category. OBC/ SC /ST  separate quota is their for each of them. You dont need to worry for this.

Reservation is mandatory in  both 85 % and 15 % quota. Hence, there is no doubt and confusion for 43 % pcb. For general category only, the requirement is 50 % in10 + 2 higher secondary from a recognized college / university.

ALL THE BEST

HOPE IT HELPS.