Answer:
Tear one off and scratch my head what was red is black instead. What is it?
What five-letter word has six left when two letters are removed?
I am the kind of nut that is empty at the center and has no shell.
I go up and down at the same time. Up towards to sky and down towards the ground. What am I?
My first half means container. Not a lot of people understand my language. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.