Which number should replace the question mark?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

A father is locked up in jail. His wife has gone bankrupt. Their male child has to sell his hotel in order to gain some money. Yet their girl child does not care and is quite happy.

How can someone be so rude?

Can you identify the hidden rebus in the image below?

I am eight letters long - "12345678"
My 1234 is an atmospheric condition.
My 34567 supports a plant.
My 4567 is too appropriate.
My 45 is a friendly thank-you.
My 678 is a man's name.

What word am I?

What has many keys but can’t open a single lock?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

How can you take 2 from 5 and leave 4?

Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

Identify the movie name through below Rebus containing Pi Mouse and coconut tree..