I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

By using 'because' continuously three times, can you make an English statement ?

How can you leave a room with two legs and return with six legs?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

What goes up but never comes down?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

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

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?

Two fathers and two sons went fishing one day. They were there the whole day and only caught 3 fish. One father said, that is enough for all of us, we will have one each. How can this be possible?