Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

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?

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

Can you write down eight eights so that they add up to one thousand?

How many letters are in the alphabet?

I’m orange, I wear a green hat and I sound like a parrot. What 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?