Hi Swapnil

Most IIMs take WAT or the written ability test where one is given around 15- 30 minutes to write an essay on any given topic. Only two IIMs- Kozhikode and Shillong take GD. But all of them conduct Personal Interview or PI.

The weightage of CAT score, academic qualifications, work experience, GD/ WAT and PI differs from college to college. You can find the detailed list on the given link: https://www.imsindia.com/CAT/iims-shortlisting-criteria.html