Which is the correct shadow of the bird?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

what does the below rebus mean?

Which is heavier: a ton of bricks or a ton of feathers?

How many times can you subtract the number 5 from 25?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

John was piloting a plane behind a car but was never able to overtake it. Why?

John can eat 27 chocolates in an hour, Jacob can eat 2 chocolates in 10 minutes, and Jolly can eat 7 chocolates in 20 minutes. How long will it take them to share and eat a box of 120 chocolates whilst playing Chess?