Generally, blue or royal blue ballpoint pens are acceptable for use in exams.
Using the correct pen color is crucial during exams. According to the reference material, students are generally required to use blue or royal blue ballpoint pens when writing their answers in exams. Using a pen color other than the specified one, such as a black pen, could lead to disqualification or a loss of marks. Board exams serve as standardized tests to assess a student's academic knowledge and skills.