Common Admission Test, popularly known as CAT is one of the toughest entrance examinations in India for Post Graduate Management degree programs. CAT is conducted by the prestigious Indian Institute of Management (IIM) and is a gateway to the best and top 1% B-schools in India, which is why it is the most competitive examination. CAT is an exam where you need to not just score good but you must score better than the others to gain a good percentile. At least 95 percentile is expected from students for admission to the top IIMs.