Hi Dear,

If you are preparing for MSC biotechnology entrance exam by All India Institute Of Medical Sciences then solving previous year paper is a must as the competition is high. I'll recommend you to buy AIIMS Entrance Exam: Previous Years Papers (Solved)  book by R. Gupta . also, For more details on complete syllabus and paper pattern of AIIMs MSC biotechnology you can refer the link below:

https://www.aiims.edu/aiims/academic/aiims-syllabus/Syllabus%20-%20M%20Sc%20&%20M%20Biotech.pdf

Good Luck