Keyboard words are not in alphabetical order, Why?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

What jumps when it walks and sits when it stands?

If you say my name, I will no longer exist. What am I?

Take one out and scratch my head, I am now black but once was red. What am I?

Solve below rebus puzzle?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

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?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?