Civil Servant (IAS/PCS)

Dear aspirant, the best B.A. The subject is that which has a link or some syllabus common to the general studies papers. These types of subjects are - History, Geography, Economics, Political Science
By opting for these types of subjects for the optional some syllabus of general studies paper get prepared itself. With the optional paper preparation. These subjects are also useful in the preliminary exam. This type of strategy will save a lot of time during preparation. It is a good & smart approach to the exam. You can pick from the following five:
Geography
Political Science
Economics
Modern History
Sociology
You can also take any literature, philosophy, or psychology to expand your mental horizon. The beauty of Humanities lies in its expansion. So keep up the hard work and enjoy your academics. Hope it helps.

Let us look at a 5-step full-proof preparation strategy for preparing for the Civil Services Examination. Step 1: Know the exam well
Step 2: Strengthen your foundation:
No matter what your background is, you need to understand the basics of the core subjects of the UPSC syllabus. Hence, refer to NCERTs, they can be downloaded from the official website of NCERT for free. Read them at least twice before making notes, and then read our NCERT compilations. Step 3: Upgrade Your Knowledge:
Once you have read all the NCERTs, it's time to expand your knowledge by reading the standard books. You can get the entire booklist for UPSC preparation in the linked article. Read the books at least twice and then make your handwritten notes to be used for answer-writing practice at the later stage!
You can also watch video lectures on our YouTube channel for important topics to supplement your knowledge. Step 4: Practice Answer-Writing
Step 5: Mock-Test Based Learning/March Towards Prelims.

Dear aspirants, Union Public Service Commission and Public Service Commission of respective states conduct entrance examinations for various fields and positions, and for most of them, one needs to hold a bachelor's degree or equivalent qualification. Now, It does not matter whether you have completed your Bachelor's degree program after a Diploma course or have followed a bachelor's degree program after completion of higher secondary, if you are a graduate, you will be considered eligible for graduate-level examination provided you fulfill other eligibility criteria applicable to each examination conducted by Union Public Service Commission, Public Service Commission of respective states or any other regulatory bodies. If you found it useful then upvote or thumbs up my answer. Good luck.

The syllabus of UPSC is based on complete general studies and one optional subject of your choice. So you can choose any subject listed by UPSC in their syllabus. You can go through the UPSC exam syllabus for civil services on its official website. Maths is recommended and you'll be able to handle it with relative ease if you have engineering experience. Perhaps, because civil service exams do not include computer engineering, you could be better off keeping math as an optional subject. You can choose any subject first and then, start from class 6 to 12 for that particular subject book. However, according to the weightage and simplicity of the syllabus, it is best to start with Indian Polity NCERT books for UPSC. Hope it helps.