I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

How many letters are in the alphabet?

I have no life, but I can die. What am I?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

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

He digs out tiny caves and stores gold and silver in them. He also built bridges of silver and made crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs his help, yet many people are afraid to let him help them. Who is he?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

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?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.