Which is heavier: a ton of bricks or a ton of feathers?

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

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?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

Why is the longest human nose just 11 inches?

What is the Surname of Barbie Doll?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

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

What Am I?

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