Good Riddles

Question: It takes one word to separate them; otherwise they are inseparable.

What are they?

Question: What's wet and dry Takes you low Moves real fast And kills you slow ?

Question: I have 13 arms, 10 legs, 2 head, and smell like burnt denim.

What am I?

Question: A mother has five daughters, January is the first daughter, February is the second daughter , March is the third daughter, April is the fourth daughter. What is the name of the fifth child

Question: There are 4 light bulbs in a room and 4 switches corresponding to these four light bulbs (in a random order). You cannot see the light bulbs from where the switches are.

If you can only visit the room with the light bulbs once, how can you figure out which switch belongs to which light bulb?