What goes up but never comes down?

A man was gazing through the window of the 23rd floor of the building. He suddenly opened the window and jumped on the other side of the window. On landing on the floor, there was not a sheer mark of injury on him.

How can that be possible if he did not use any kind of parachute and did not land on a soft surface?

How can you make a TV, a bed, a dog, and a car liquid?

Find the missing letter in the last circle logically in the given below picture.

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

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

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

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

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?