hi sir if possible can I give board examination of class 10 from two different board like from central board and Bihar board.
No it's not possible, you can at a time give only one exam of one board. Obviously your school will have it's own board it will be either central board or bihar board so as per your school rules and regulations do give the exam and the board that you give the exam through, you will have cutoffs for junior college as per that board only.
Best wishes. Thank you.