What does below chemistry rebus means?

What can go through glass without breaking it?

A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

John was drowned by he was not wet. How?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Why 1729 is a magic number? Answer Logically.

What number when divided in half becomes zero?

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.