Answer:
Lighter than feather and softer than silk, yet the strongest man in the world cannot hold me for more than a few minutes. What am I?
My geometry is lost in the night to be found in daylight's break. The rigors of time have torn me to shreds, yet I stand to protect that which lies within. What am I?
I am the kind of soda you must not drink. What am I?
I have 24 keys but cannot open any locks. Sometimes loud, sometimes soft. What am I?
What is the beginning of eternity the end of time and space the beginning of every end and the end of every race?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.