What's the only room from which no one can enter or leave

What begins with T, ends with T, and has T in it?

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

Do you know who was buried in John's tomb?

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

What building has the most stories?

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

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

what's the probability of getting a king or a queen from a pack of 52 cards?