Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

What is more useful when it is broken?

Which point will the car reach to go out?

The more you take me, the more you leave me behind.
Who Am I?

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?

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

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

What has one letter and starts with an E?

What breaks yet never falls, and what falls yet never breaks?

If,

A = 1

B = 2

C = 3

...

...

Z = 26.

Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.