dear SALAUDDIN BISWAS,

yes you should upload your 10th class marksheet in neet ug 2020 in case if you are lost your passing certificate because some boards can't not provide passing certificate to the students and the students belong to to this type of board have to upload their marksheet instead of passing certificate. so you can upload your 10th marksheet in neet ug .

but remember that as soon as possible you should go to your board office and get a new passing certificate of your 10th class because at the time of counselling it is required.

remember upload the original scanned image of 10th marksheet not xerox copy.