Hii,

In the GSEB HSC board exam, it's typically important to use a black ballpoint pen for filling out the OMR sheet, as it ensures proper readability by the scanning machines. Since you used a black gel pen instead, there's a possibility that the OMR sheet might not be processed accurately if the gel ink has any irregularities (like smudging ).

However, since you made sure there was no smudging of the ink, and the writing is clear, there's a chance that your response could still be acceptable. The best course of action now is to stay calm and monitor your results when they are released. If there are any issues, you might want to contact the board or your school to inquire about the situation.

In the future, it's always safest to strictly follow the instructions regarding the type of pen to use.