UPSC ESE/IES Answer Key 2020: Union Public Service Commission (UPSC) has conducted the Indian Engineering Services (IED/ESE) Prelims Exam, 2020 on 5th January 2020. The ESE/IES Exam 2020 was conducted at various exam centers across the India. UPSC will release the official answer key of ESE/IES after 1 week of exam. The official answer key of ESE/IES will be released on the official website. The answer key of General Studies & Engineering Aptitude, Civil, Mechanical, Electrical, Electronics and Telecommunication Engineering will be released separately. Those candidates who have appeared in UPSC ESE/IES can check the official answer from the official website of UPSC.