Hello,
Students who have failed in one or two subjects can apply for supplementary exams. Yes you can give both the subjects that you have failed. GSEB Class 12 supplementary exams will be held in the second week of July 2020. Last year it was held from July 11 to 14. Please click the below link to know more.
https://school.careers360.com/articles/gseb-12th-result
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