Answer:
I have hands but cannot clap. What am I?
I plow and plow, but never sow. What am I?
He has married many women, but has never been married. Who is he?
Lighter than what I am made of, more of me is hidden than is seen. What am I?
I have wheels and flies yet I am not an aircraft.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.