Answer:
What happens when you throw a green stone into the Red Sea?
What is that you will break even when you name it?
I drift forever with the current and flows to your everyday life. I make living easy but I am good at killing people too.
What has feet and legs, and nothing else?
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 am I?
When is it bad luck to see a black cat?