Which of the below owl is odd one out?

What does below chemistry rebus means?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Who has married many women but was never married?

You are mixing a mixture of cement and Sand with five gallons of water. You have a garden hose giving you all the water you need. The problem is that you only have a four-gallon bucket and a seven-gallon bucket and neither has graduation marks. Find a method to measure five gallons.