Best short easy riddles

What is black when you buy it, red when you use it, and gray when you throw it away?

If you have two coins which total 35 cents and one of the coins is not a dime, what are the two coins?

A clerk in the butcher shop is 5 feet, 10 inches tall. What does he weigh?

Until I am measured I am not known. Yet how you miss me when I have flown.

What is as big as you are and yet does not weigh anything?

Without looking at a calendar, within a minute name a boys name using 5 consecutive first letters of 5 consecutive months.

What makes grown men cry, but humanity would go extinct without it?

I cannot be felt, seen or touched, yet I can be found in everybody. My existence is always in debate, yet I have my own style of music.

Tom's height is six feet, he is an assistant at a butcher's shop, and wears size 12 shoes. What does he weigh?

How can you drop a raw egg from a height onto a concrete floor without cracking it?