You can choose Symbiosis and the practical knowledge is more than in Christ university for BBA.
The paper pattern for both the university does not differ much.

You can check the pattern below:

Christ University Paper Pattern

Total Number of Questions: 120 Test Duration: 120 minutes Sections: English Language Comprehension Skills Verbal Reasoning, General Knowledge, Current Affairs, Quantitative Aptitude, Numerical Ability, Fundamental Mathematical Operations, Reasoning: Critical, Analytical and Logical, Data Analysis and Interpretation

SET BBA Paper Pattern

Test Duration: 150 minutes Total Number of Question: 150 Sections: General English-40; Quantitative-40; General Awareness -40; Analytical and Logical Reasoning- 30

Both are decent colleges for BBA studies. You can choose the on e as per your location, fees and other convenience.

Some of the books for preparation of BBA you can choose are:

1. A complete self-study guide BBA/BBS/BBM entrance examinations.
2. BBA: entrance examination - 16 practice sets for BBA/BBS, SET (General), IP - U & UGAT by GKP.
3. The perfect study resource for - GGSIPU BBA common entrance test (Old Edition).
4. BBA/BBM entrance exam paperback by Lal and Jain.

Hope this helps you.