Below rebus represent famous DiCaprio movie. Can you name it?

What does the below rebus riddle means?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

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?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

John can place six large boxes or nine small boxes into a carton.

Can you find out in how many cartons can he place sixty-six boxes in total?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

John bought 150 chocolates but he misplaced some of them. His Father asked him how many chocolates were misplaced.
He gave the following answer to him:
If you count in pairs, one remains
If you count in threes, two remain
If you count in fours, three remain
If you count in fives, four remain
If you count in sixes, five remain
If you count in sevens, no chocolate remains.

Can you analyze the statements and tell us how many chocolates were lost?