Hello Bipin

Career options through competitive exams are many you just have to check the eligibility from UPSC Official Site.After 12 you can try for NDA Exams which eligibility is till 19/5 year old which can give you a chance to be in Indian Defence Forces as an Officer you also can try out CDS Exam in your last year of Graduation but NDA will give to serve in any force and through CDS exam commerce students are only applicable for Indian Army.