Hello Riya

There is practically not a single way to ignore everyone while you prepare for your entrance exams because neither other people can stop doing their daily job nor you can close your eyes and ears just to ignore them. The only way is to focus on what you are doing and try not to get distracted. I had the same problem as you do so I used to study at night because it is very peaceful at that time and nobody around to disturb you even. All the best!