Using Only Five 5's and any mathematical operator make sum as 37

What does below chemistry rebus means?

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

A mathematician couple was having a Frappuccino in Starbucks sitting opposite to each other. Suddenly the guy noticed the text written on the paper in front of them and exclaimed that it was wrong. The girl denied it and said it is appropriate. Both are correct. What is written on the paper?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

Why did Buffon take the goal with him after every Juventus match?

Complete the table series riddle by finding the number that can replace "??".

A worker is to perform work for you for seven straight days. In return for his work, you will pay him 1/7th of a bar of gold per day. The worker requires a daily payment of 1/7th of the bar of gold. What and where are the fewest number of cuts to the bar of gold that will allow you to pay him 1/7th each day?