Solution:

Pink gift box.

Solution:

The boy in the center. He doesn't have any shadow.

Solution:

3

Explanation:
If I had 4 eggs -- Its just imagination.
A thief gives me 3 -- I go three eggs.
My farm rooster lays 5 eggs -- A Rooster can't lay eggs.

Solution:

Chilwell can go through as all the person whose name contains even number of letters can go through the door.

This is a classic green glass door riddle.

Solution:

A SINGLE WORD.

Solution:

7 (SEVEN-S=EVEN)

Solution:

He started out as a billionaire, but lost so much money in his good works(by giving to poor people) that he became a millionaire.

Solution:

No it does not collapse.

It has driven a half kilometers - you would subtract the gas used from the total weight of the bus

Solution:

The youngest son went over and blew out the candle after Death left because the son said 'till the candle wick burns out', not 'till the candle burns out'.

Solution:

zero

6 without head => 0
9 without tail => 0
8 in two halves => 0 & 0