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

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 walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Can you fill the blank with the correct number?

6 30 870 756030 _____

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?