A word I know has six letters it contains, remove one letter and 12 remain. What is it?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

I am white when I am dirty, and black when I am clean. What am I?

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

Its something that each of us devours,
Not just us but birds, beats, trees, and flowers,
Frets iron and nibbles steel,
Toil hard stones to meal,
Exterminates king, collapse town,
And blows the mountains down.

A lion and its tamer are standing inside a cage that measures 1 unit in radius. Both of them can effortlessly run at the speed of 1 unit maximum.

1) Suppose the lion is hungry, will he be able to eat up the tamer?
2) If yes, how long can the tamer survive?