CLAT stands for Common Law Admissions Test. It is an all India entrance examination conducted by the National Law Universities for admissions to their under-graduate and post graduate degree programmes (LL.B & LL.M).
A PO or a Probationary Officer is basically an Assistant Manager of Scale I in a bank. Every year all the government as well as the private banks conduct Bank PO exams to recruit young officers.
CAT - Common Admission Test is a common aptitude test which is a gateway to 20 IIMs and over 1,200 B-schools in India.
CMAT - Common Management Admission Test is a National Level Entrance Examination for admission to Management Programme(s) in the country.
BBA-IPM - Integrated Programme in Management is a five-year programme in management offered by IIM Indore. The programme is aimed at students who have passed out of class 12th / Higher Secondary or equivalent from various schools in India.