Hello Ashu, 

You can consult following books for entrance exam of BBA:

• Quantitative Aptitude by R.S.Aggrawal 
• English – From Plinth to Paramount (Vol-1 and 2) by Neetu Singh 
• A Modern Approach To Verbal and Non-Verbal Reasoning Revised Edition by R.S.Aggarwal 
• Manorama Yearbook 2018

These are the most commonly used and most effective books in preparation of the proposed exam.

All the best.