There is something which is always coming but never arrives?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

A man was telling some of his war stories to his grandchildren.
"When the World War I was on the verge of end, I was awarded for my bravery for I had saved a group of my men." He coughed and then added, "When we were fighting in northern France, an enemy soldier threw a grenade at us. Before it could explode, I picked it up and threw it away. For my act of bravery, right before the war ended, A General gave me a sword engraved with the words "Awarded for Display of Bravery and Heroism in World War 1"."

Hearing this, one of the grandson spoke up. "Grandpa, this is not a true story. It can"t be true!"

The truth is that it was not. How did the grand children know it?

What time is it when an elephant sits on a fence?

The more you take me, the more you leave me behind.
Who Am I?

In the figure that has been attached to this question, each digit represents a digit. The similar letters carry the same integer value. Can you expose the original digits?

Can you place three balls such that the equation shown in the picture holds true?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

Decode below rebus
D
N
A
T
S , D

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?