Dear Harshal, OBC means other Backward Category. SEBC is Socially and Economically Backward Category and is especially for those Candidates who belong to OBC and whose annual income is less . Now coming to your question, the available reservations for MH CET Law are:

OBC: 27%

SC: 15%

ST: 7.5%

Now as SEBC falls under OBC, MH CET law has resevration for SEBC Category as well.