CAT 2020 answer key: Last day to raise objections, here's direct link CAT 2020 answer key: Last day to raise objections, here's direct link CAT 2020 answer key: Here is the step-by-step guide to check IIM CAT Answer Keys 2020. advertisement CAT 2020 answer key: Last day to raise objections, here’s direct link CAT 2020 answer key: The last date to raise objections against Common Admission Test (CAT) 2020 answer key is today, December 11, 2020. The candidates who appeared for the CAT 2020 can raise objections against the answer keys on the official website, the link for which is iimcat.ac.in. Candidates will be able to see the Answer Key as well as their Individual Responses to Questions till December 11.