What does this rebus puzzle means ?

When is the top of a mountain similar to a savings account?

I am eight letters long - "12345678"
My 1234 is an atmospheric condition.
My 34567 supports a plant.
My 4567 is too appropriate.
My 45 is a friendly thank-you.
My 678 is a man's name.

What word am I?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

You have two jars of chocolates labelled as P and Q. If you move one chocolate from P to Q, the number of chocolates on B will become twice the number of chocolates in A. If you move one chocolate from Q to P, the number of chocolates in both the jars will become equal.

Can you find out how many chocolates are there in P and Q respectively?

Why do people go to bed?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?