Hey Nidhi

As you may know the paper for MSc Applied Microbiology will consist of 150 multiple choice questions asked from the subjects like Physics, Chemistry and Mathematics for 450 marks.

You should focus on UG topics like Microbiology and
Biochemistry, Biotechnology,Food Microbiology,Chemistry and Biology that you were taught in your undergraduation.

For better understanding I suggest you to go through previous year papers and practice mock tests. All the best.