What word does this rebus represent?

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French Police inspects a room where there are no windows, no doors, no tables and is almost empty expect there is just a puddle of water. They found a dead man who obviously hung herself from the ceiling, but they are not able to figure out how this had happened.

John and Jacob entered the crime scene and easily able to solve the case.

How did the man die?

What number divided by 4 is the same as that number minus 4?

What can you catch but never throw?

How can you leave a room with two legs and return with six legs?

Doctor Alex and a bus driver John are both in love with the same woman named Olivia. The bus driver need to go for a long trip of 10 days, Before he left he gave Olivia 10 apples.

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

Decode below rebus
D
N
A
T
S , D

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Can you identify if it's a murder or a suicide ?