Clean riddles

In a new Engineering Hostels they have 100 rooms. Ankit Garg was hired to paint the numbers 1 to 100 on the doors. How many times will Ankit have to paint the number eight ?

Two mothers and two daughters went out to eat, everyone ate one burger, yet only three burgers were eaten in all. How is this possible?

Everyone has it and no one can lose it, what is it?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. I am a...

I am a 5 letter word. Take away the first letter and I am a country's name. Take away the first two letters and I become the opposite of the 5 letter word. Who am I?

Two girls ate dinner together. They both ordered iced tea. One girl drank them very fast and had finished five in the time it took the other to drink just one. The girl who drank one died while the other survived. All of the drinks were poisoned. How is that possible?

I am small. I can be scary. I have eight legs. I spin a web. What am I?

How do you divide 20 oranges equally to 11 girls? No one gets more and no one gets less. All 11 girls should receive equal portions. How?

There was a railroad crossing without any cars and trucks! Can you spell that without using any "R"?

It is just something that everybody does at the same time. What is that?