Ramesh, SEBC is a State level Sub Category of OBC. At National Level, you do not have SEBC as a separate Category. You only have General Category, OBC, SC,ST. And . So to be eligible for NEET, you should have completed your 12th, passed in all subjects and secure a minimum aggregate of 50% in Physics, Chemistry and Biology. It is 50% for General Category, 45% for PWD and 40% for OBC,SC,ST. Now if you belong to SEBC Category, the Category you belong to should be also listed in the Central OBC list. Or else you will be considered as General Category and so you have to secure a minimum aggregate of 50% in Physics, Chemistry and Biology. This 50% is inclusive of the Theory and Practical marks scored in Physics, Chemistry and Biology collectively. You needn't score 50% in Physics, 50% in Chemistry and 50% in Biology separately. You need an aggregate of 50% or 40% depending on your Category as an aggregate in Physics, Chemistry and Biology. And along with Physics, Chemistry and Biology, you should also have studied English as one of the core subjects in your 12th. With 144 marks, you are at 48% in Physics, Chemistry and Biology. So if your Community is listed under Central OBC list, then you will need 40% aggregate and you will be eligible for NEET. Or else you will need 50% aggregate and then unfortunately you will not be eligible for NEET.