What number should come in place of the question mark below?

What always comes into a house through the keyhole?

What is the longest word in the dictionary?

Which flower has two lips?

A and B have a certain number of chocolates with them. If B gives one chocolate to A, they will have an equal number of chocolates. But if A gives one chocolate to B, then A will be left with half the number of chocolates that B has.

Can you find out the number of chocolates they have right now?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

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

What you cannot hold but it is yours?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

The below mentioned letters have been placed in a order using a logic.

DEAD, BALL, FEAR, SHOP

Can you find the logic?