Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

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

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

What is more useful when it is broken?

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

What demands an answer, but asks no questions

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

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.

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?