What word begins and ends with an E, but has only one letter?

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

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

If a wheel has 54 spokes, how many spaces are there between the spokes?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?