Hey!

If you have lost your board exam hall ticket, then you can get it back by using DIGI LOCKER . It is a government intiative towards digital India. You cdan access it by visiting the official website https://digilocker.gov.in/

Then sign up or sign in there and you can get access to the documents you want by entering your details. you can download the document and then later print it.

Hope it helps.

Thankyou.