Hello,

When it comes to eligibility criteria for UPSC Civil Service Examination, then candidates need to pass graduation in any discipline from a recognized university, candidates in the final year of graduation too are eligible to apply provisionally, the minimum age required regarding this is 21 years as on 1st August of the appearing year, now coming to your question, if you're currently in Xth standard then there is long time for UPSC, next two years of school, and three/four/five years of graduation depending upon the duration of the course you will choose, anyway see there is no such restrictions of belonging to specific stream for qualifying UPSC, yes people from arts/humanities background havee advantage of being acquainted with the syllabus as in they already have studied history, political science, geography, economics etc at 10+2 and graduation level, and there  is considerable overlap with the syllabus of GS and optional paper, however if you go by previous year trends of toppers they come from diverse backgrounds as that of medical, engineering, commerce etc, so choose stream at 10+2 level as per your interest, aptitude, skill etc, if you have interest in humanities group, go for the same, and if in future you have interest for graduation in political science, history, sociology, public administration, economics, law, geography etc, you may follow this route, else if you want to have back up then there is engineering, management, medical to name a few, it's not your stream selection which is the factor in deciding the success of any candidates, rather it's his/her single minded focus, determination, discipline, perseverance which pays off, so think thoroughly what you intend to do, you want to appear for with or without back up plan.