While having two marksheets from different boards (CBSE arts and NIOS PCB) is generally acceptable for NEET, your current situation wouldn't qualify you. The CBSE sheet lacks the crucial Physics, Chemistry, and Biology subjects. For NEET eligibility, both marksheets combined must cover all three subjects and you must meet the minimum marks in each. Consider studying Biology additionally to fulfill the subject requirement and aim for future NEET attempts. Remember, individual colleges might have their own admission criteria beyond NEET, so double-check their policies regarding marksheets and minimum marks.

Not acceptable, you should appear all the subjects from nios