The Indian Institutes of Science Education and Research (IISER) has released the provisional answer key for the IISER Aptitude Test (IAT) 2026, which took place on June 7 from 9 am to 12 noon. Candidates who participated in the examination can now download the answer key from the official admission portal, iiseradmission.in. This key enables candidates to estimate their probable scores prior to the official results announcement. Alongside the answer key, the IISER will also issue response sheets on June 9, providing candidates an opportunity to compare their recorded responses with the provisional answers. An objection window will be activated concurrently, allowing candidates to challenge any discrepancies they may identify. The provisional answer key is a crucial tool for candidates to assess their performance, check the accuracy of their recorded answers, and submit any objections within the designated timeframe. Candidates are encouraged to download the answer key promptly and stay updated on further developments regarding the response sheets and final answer key.