You can see it everyday, But cannot touch it at will. What is it?

What is always in front of you but can’t be seen?

Why is it against the law for a man living in Delhi to be buried in Mumbai?

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?

What word is pronounced the same if you take away four of its five letters?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

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

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

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?

Name the three-letter word that can complete the below words:

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E