My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Why is the longest human nose just 11 inches?

What is red and smells like blue paint?

All of the flowers I have are orchids except two. All of the flowers I have are hibiscuses except two. All of the flowers I have are roses except two.

Can you tell me how many flowers I have?

If your uncle’s sister is not your aunt, what relation is she to you?

When it is alive we sing, when it is dead we clap our hands. What is it?

What is harder to catch the faster you run?

There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle. Where's the white house?

You are an expert on paranormal activity and have been hired to locate a spirit haunting an old resort hotel. Strong signs indicate that the spirit lies behind one of four doors. The inscriptions on each door read as follows:

Door A: It's behind B or C
Door B: Its behind A or D
Door C: It's in here
Door D: It's not in here

Your psychic powers have told you three of the inscriptions are false, and one is true. Behind which door will you find the spirit?