Can you make four (4) nines (9) equal 100?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

I add 5 to 9 and get 2. The answer is correct, so what am I?

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

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

Its something that each of us devours,
Not just us but birds, beats, trees, and flowers,
Frets iron and nibbles steel,
Toil hard stones to meal,
Exterminates king, collapse town,
And blows the mountains down.

Akbar called Birbal and asked him to draw a line on the floor. He asked Birbal to make that line smaller without erasing it. Birbal smiled and did it before Akbar could blink his eyes.

How did he managed to do it?

Find out the number of circles in the given picture having Illusion

John was drowned by he was not wet. How?

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?