Hello,

If you have ambition to become IPS Officer, then you need to appear for UPSC exam, qualify the same with good rank against your respective category, now when it comes to the eligibility criteria of appearing in this exam, there is no such restrictions of belonging to specific stream, candidates within the age group of 21-32 years can appear provided they have passed graduation in any stream from a recognized university, they can also appear in the final year provided they can show the proof of the passing examination within the time period as prescribed by the authority regarding this.

As I said there is no such compulsion to belong to specific stream for UPSC, you can pursue graduation in any stream of your choice, the reason I'm saying this is if you look at previous year toppers they come as diverse backgrounds as that of engineering/medical/science/commerce etc, now the subject combinations at 10+2 level depends in which field you want to go, for a technical field you can choose PCM, for medical or biology related domain you can go for PCB, in case you choose PCMB you will have the best options of both the world, it depends in which subject your interest lies( of course with aforementioned courses there are various options but I have highlighted only the core ones that go with the domain) and it's good you're thinking about UPSC, but you also have to understand that there is long to way to go for the same, and you should choose a field as per your preference, for example many aspirant they go for a career in their chosen field, gain some experiences, and later if they feel like appearing for this exam, they do the same, you should follow this path if at present you're not sure of only appearing for UPSC, and this exam is highly competitive and moreover it's good to have  a back up plan also, other than this the only advantage candidates who pursue bachelor's degree in specialization with subjects like political science/international relations/geography/economics/law/history/public administration/sociology to name a few have is there is considerable overlap of these subjects with the syllabus that of general studies and optional subjects, that's it, so explore your choices wisely, you should remember that it's always your personal attributes of single-minded focus, dedication and perseverance that will help you succeed in this exam, it doesn't matter in which place you live, and many candidates even from Hindi background qualify this exam, this exam has got extensive syllabus definitely, but with proper plan and strategy nothing is impossible, many candidates have even qualify this exam without coaching, solely on self-efforts, hence you should be well aware of what to read, what to skip, how much to reach, keeping resources minimal ,revision time and again, going through newspaper on a dally basis, start off with NCERT and then move towards standard books, go though previous year papers and apply mock tests on regular basis, these are key steps while initiating the preparation of UPSC exam.