Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

Replace the question mark with the correct number in below Picture:

Which country gets ill every time?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

What does below Rebus mean ?

esgg sgeg gegs gsge

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?

You can hear me, but you can't touch or see me.

What am I?

A high school has a strange principal. On the first day, he has his students perform an odd opening day ceremony:

There are one thousand lockers and one thousand students in the school. The principal asks the first student to go to every locker and open it. Then he has the second student go to every second locker and close it. The third goes to every third locker and, if it is closed, he opens it, and if it is open, he closes it. The fourth student does this to every fourth locker, and so on. After the process is completed with the thousandth student, how many lockers are open?

The more it dries, the wetter it becomes. Can you tell what it is?