Which wheel of car does not rotate when you turn your car right?

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 thought of a number that is made up by using all the ten digits just once. Here are a few clues for you to guess my number:

First digits is divisible by 1.
First two digits are divisible by 2.
First three digits are divisible by 3.
First four digits are divisible by 4.
First five digits are divisible by 5.
First six digits are divisible by 6.
First seven digits are divisible by 7.
First eight digits are divisible by 8.
First nine digits are divisible by 9.
The number is divisible by 10.

Can you find out the number ?

Solve the puzzle by telling what does below picture means.

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

What goes up but never comes down?

What is full of holes but still holds water?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

I taste better than I can smell. Who am I?

You have an empty wine bottle with a cork that has been secured at the top in a normal way. There is a metal ring inside the bottle that is suspended by a string.

How can you make the metal ring drop to the bottom if you are not allowed to touch anything - not the bottle, not the cork, not the thread and not the ring?