Answer:
What do you get when you mix lemons with gun powder?
In Paris but not in France the thinnest of its siblings.
People see through me, but none pass through without killing me. I can be anywhere, and can be seen double or single. What am I?
A thousand wheels but move I do not. Call me what I am call me a lot.
I always have to work with something in my eye. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.