What work can one never finish?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

When we see 2 but call 10?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

Do you know who was buried in John's tomb?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

Consider this about a word: 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?