Hy aditya,
Various universities gives admission in BBA course on the basis of merit list. Numerous institutes and colleges also provide admission to candidates through the entrance exam. The entrance exams is conducted at national, state or college level by different institutes and colleges. Admission is done through the merit list. The merit list will be prepared based on qualifying examination or entrance test. AIMA UGAT is a national level entrance exam regulated by AIMA for giving admissions in BBA.

A few institutes also provide direct admission based on the candidates performance at the 10+2 level.

Listed below are some of the top entrance exams conducted in the country for admission to the course.

AIMA UGAT(Under Graduate Aptitude Test)Symbiosis SET (Symbiosis Entrance Test)IPU CET(Indraprastha University Common Entrance Test).

Kindly specify which forms are you talking about exams forms or admission forms. I reckon you are asking about admission forms so I gave information regarding that. 
I wish you all the best
Cheers !!