Can you decipher the two rows to find the hidden word?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

I am white when I am dirty, and black when I am clean. What am I?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

A man is found hanging dead from the ceiling of a room. The room’s dimensions are 15 x 15 x 15. The man is only 6ft tall and the rope was only 2ft long. There are no windows and only one door to the room. The door is bolted shut from the inside, and a puddle of water is under the man. How did he kill himself?

You can hear me, but you can't touch or see me.

What am I?

What word is identified by the below rebus?

Your Your Your Your Your
Your Your Your Your Your

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?

Can you move 2 matchsticks to form four equal sized squares.

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?