He loves to dance, twist and prance, he shakes his tail, and as a way he sails, wingless he flies into the sky. What is he?

What has no start, end, or centre?

Which wheel of car does not rotate when you turn your car right?

What is the centre of gravity?

Who is that with a neck and no head, two arms and no hands? What is it?

What is the end of everything?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

Name a key which is hardest to turn.