You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

If you say my name, I will no longer exist. What am I?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

I have an eye but still cannot see.

Who am I?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

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?

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60.

One of them is 20+20+20.

whats the other way ?

It is an eleven letter word.
The first, second, third and fourth letters form a banquet's name.
The fifth, sixth and seventh letters form a car's name.
The eighth, ninth, tenth and eleventh letters form a mode of transport.

Can you identify what word it is?