Hello Aspirant,

You can check for the entrance syllabus in their official website. If the exact entrance syllabus is not provided , you may go through their course syllabus , learn the basics of core subjects and prepare accordingly. In general in most MSc entrances, the questions may come from Chemistry,Biological Sciences, Earth Sciences and maths/physics as optional. Below are the main topics to be covered to do well in microbiology entrance:

General Microbiology

Cell & Molecular Biology

Microbial Biochemistry

Immunobiology

Microbial Genetics

Microbial Physiology

Microbial Growth and Metabolism

Environmental Microbiology

Genetic engineering

Microorganisms in agriculture

Food Microbiology

https://www.careers360.com/university/bharathiar-university-coimbatore

All the best