What brings you down but never up?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.

One night, Louis and Adam were sitting together. Adam was watching a movie while his wife Louis was reading a mystery book. Suddenly the power went out and Adam decided to go to bed, but strangely Louis kept on reading. There was no artificial light around, so Louis kept on reading. How come?

Identify the hidden meaning behind this picture?

What am I?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

How many triangles are there on the puzzle below?

Bay of Bengal is in which state?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?