UPSC (Union Public Service Commission) is a constitutional body. It means the constitution of India specially mentions about the establishment of the UPSC body. This constitutional body, since it is enshrined in the constitution of India, derives its powers and functions directly from the supreme authority of the land i.e. the constitution of India. Under the Article 315 to 323, of Part -14 of the constitution, the UPSC is entrusted with duty to conduct various important exams like Civil Services Exam, Engineering Services Exam, Combined defence services exam, Indian Economic services/ Indian Statistical Services, National Defence Academy  Examination and similar other examinations.