'm doin B.tech(ECE) my aim is to become an IAS. i wanna prepare for IAS examination.pls suggest me how to prepare?how 2 select optional sub?

although , I am not an IAS officer and the right person to guide you, as per my knowledge one should opt for the subjects which are going to be useful in case yuo fail to succeed in IAS exam. therfore if you are good at ur subjects and have intereset there is othing wrong opting your own subjects wh