I have giving my 12th cbse board exam in 2017 with 64% marks in p.c.b then can I give improvement exam in 2019 ? Is it possible ??
Its unfortunately nnot possible since cbse improvement exam can be in succeeding year of Class12th passing year.
Since you have 1st attempt of 12th in 2017 you can only give improvement exam in 2018 and not 2019.
Only 1 attempt is given for improvement scores in cbse.