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?

I can be cracked, made, told, and played. What am I?

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

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

In order to complete the racing competition, the Mexico racetrack has to submit its top and the most famous three horses to win the competition. Due to an electrical storm, all the records are cleared and no one knows which horse holds the record. They all look identical and it becomes even more difficult to differentiate the horses. There are 25 horses in the Mexico racetrack. But there can be only five horses at a time on the track. What will the least number of races that can be conducted to find out the three fastest horses?

No matter how little or how much you use me, you change me every month. What am I?

I can sizzle like bacon,
I am made with an egg,
I have plenty of backbone, but lack a good leg,
I peel layers like onions, but still remain whole,
I can be long, like a flagpole, yet fit in a hole.

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?