Before Mount Everest was discovered, what was the highest mountain in the world?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

I can sizzle like bacon,
I am made with an egg,
I have plenty of backbone, but lack a good leg,
I peel layers like onions, but still remain whole,
I can be long, like a flagpole, yet fit in a hole.

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

What you cannot hold but it is yours?

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

What Am I?

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?

Riddle me this, Riddle me that,
What am I? I am made of wood, but you can't see me down?