If you say my name, I will no longer exist. What am I?

How many sides does a circle have?

I am white when I am dirty, and black when I am clean. What am I?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

What is the riddle which can be asked all day with a different correct answer each time.

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

What has many keys but can’t open a single lock?

The more of this there is, the less you see. What is it?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?