Answer:
What was the first man made invention that could see through a wall?
What has no hands but might knock on your door, and if it does you better open up?
What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?
It is where kings, queens, knights and bishops go to war together.
What does a stone become when in the water?
Two little holes in the side of a hill. Just as you come to the cherry-red mill.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?