Answer:
I am lighter than air, but a hundred people cannot lift me. Careful, I am fragile. What am I?
I am an odd number. Take away a letter and I become even. What number am I?
I shoot but never kills
Of the king I am blue and of the peasant I am red. Of the frog I am cold and of the dog I am hot instead.
What invention lets you look right through a wall?
What begins and has no end? What is the ending of all that begins?