What does this Rebus Picture means ?

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

Remove two matchsticks to make the below equation correct.

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

I’m tall when I’m young, and I’m short when I’m old. What am I?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Can you Find and name the hidden bird in the picture below ?

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.

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?