Hi aspirant,
The best and quickest solution to it would be using the Digilocker online app. Basically all your government documents, certificates and marksheets linked with your AADHAR number are available on the app as a soft copy. You can either get a print out of your marksheet or upload the soft copy itself which ever is instructed.
Later on you can apply in the concerned board for the duplicate copy of your marksheet.
Hope it helps!!
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