What does below chemistry rebus means?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

You are given four tennis balls and asked to arrange those balls in a manner that the distance between each one of them is exactly equal. How will you do it?

Which tank will fill first?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

You are trapped in a room with two doors. One leads to certain death and the other leads to freedom. You don't know which is which.
There are two robots guarding the doors. They will let you choose one door but upon doing so you must go through it.
You can, however, ask one robot one question. The problem is one robot always tells the truth, the other always lies and you don't know which is which.
What is the question you ask?

A couple went on a climbing trip. But only the husband returned from the vacation and said that his wife slipped off while climbing and died. On investigating, the local sheriff arrested him saying, 'Your travel agent called. You murdered your wife.'

The man did not inform anyone about the trip. Then how was the agent so sure that it was a murder?

I have eight fingers and two thumbs but I do not live. What Am I?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

Rectify the following equality 101 - 102 = 1 by moving just one digit.