Hey Azam.

The below link will give you the syllabus for AMU B.Sc Entrance Exam.

https://drive.google.com/file/d/0B2LhCqUbsP4TZXhXSjZzN3QyV1E/view

And the model and aample papers can be found below

http://www.howtoexam.com/index.php?option=com_university&task=paper_search&state=Uttar+Pradesh&university=Aligarh+Muslim+University+%28AMU%29&course=B.Sc&Itemid=58

Hope this helps. All the best.