I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

1. How can we put an elephant in the refrigerator?
2. How can we put a Giraffe in a refrigerator?
3. The king of the jungle invites all the animals to a party everyone comes except for one animal, which animal?
4. You come to a crocodile-infested lake, you can't go around it, you can't co under it and you can't go over it, how do you get across?

Can you solve below mathematical equation?

2^1234 - 2^1233

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

You can see it everyday, But cannot touch it at will. What is it?

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 Wild West, you are challenged into a death match by two bounty hunters nicknamed Golden Revolver (GR) and Killer Boots (KB). You accept the challenge. None of you want to waste any of the bullet and so a certain rules are laid down:

1) All of you will shoot in a given order till the last man standing.
2) Each of you shoots only once upon his turn.
3) If any one of you is injured, the other two will finish him off with an iron rod.
4) The worst shooter of all (which is you) shoots first and the best one shoots at the last.

Now, how will you plan things if you know that you hit every third shot of yours, KB hits every second shot and GR hits every shot ?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

What does this rebus puzzle means ?