See if you want to appear for the board examination of 10th and 12th with only one subject i.e., URDU then you can go for the On-demand examination of NIOS. In NIOS, you have to give the examination of 10th and 12th in that one subject and you can use the Marksheet of the NIOS along with the boards marksheet in order to sustain the eligibility conditions. The NIOS marksheet is applicable for all of the colleges.

To know more about NIOS 12th examination, visit the link below:

https://school.careers360.com/exams/nios-class-12

To now more about NIOS 10th examination, visit the link below:

https://school.careers360.com/exams/nios-10th

I hope this answer helps. All the very best for your future endeavors!