Hey enthusiast ,

IIM Rohtak and all other IIMs offers masters and post undergraduate degree's . So to get through any of the IIMs you need to complete your undergraduate first for that you have to earn a bachelor degree from any institute which offers bachelor degree.

whereas christ university offers both bachelor as well as master's courses . So if you have just cleared your intermediate you have to pursue for a bachelor course than you are eligible for a master or an undergraduate course.

hope i was able to clear your doubts , Happy to help !!!