Suppose we lay down two cups in front of you. One of the cups is filled with tea and the other one with coffee. Now we ask you to take a spoonful of tea and mix it with the coffee. At this moment, the coffee cup has a mixture of tea and coffee. You have to take that mixture (spoonful) and add it back to the tea.

Can you now tell if the cup of coffee has more tea or the cup of tea has more coffee?

What's the only room from which no one can enter or leave

A letter is hidden in the image in plain sight. Can you spot it in 6 seconds? Test your eye power now!

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

What English word has three consecutive double letters?

Why do people go to bed?

Can you figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den

I travel all around the world but always stay in the corner. What am I?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

How many squares, of any size, can you find on this chessboard which do not contain a Rook?