Short Riddles and Answers

Question: What is it that after you take away the whole, some still remains?

Question: An electric train is traveling south. Which way does the smoke go?

Question: What goes back and forth constantly, but never in a straight line?

Question: A vivid reality, a naked morality, a place where wishes come true.

Question: What relation would your father's sister's sister-in-law be to you?