GATE answer key 2021: IIT Bombay Graduate Aptitude Test (GATE 2021) will be released by March 2. After the release of answer-key, the candidates can check it by visiting gate.iitb.ac.in. Earlier the response sheet has been issued. When the answer key is released, students will be able to match their answers. If there is any objection to the answer to a question, then students will be able to register their objections from March 2 to March 4. 500 fee for each objection