Keyboard words are not in alphabetical order, Why?

What is both possible and impossible at the same time?

Accidentally, two trains are running in the opposite direction and enter a tunnel that is 200 miles long. A supersonic bird that has fled the lab and taken shelter in the tunnel starts flying from one train towards the other at a speed of 1000 mph. As soon as it reaches the second train, he starts flying back to avoid collision and meets the first train again at the other end. The bird keeps flying to and fro till the trains collide with each other.

What is the total distance that the supersonic bird has traveled till the trains collided?

The following four words might seem abrupt to you. But you can make them meaningful by just adding vowels.
RDSH
GGPLNT
TMT
NN

Hint: All of them are vegetables.

When does a USA Potato change its nationality?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

If you say my name, I will no longer exist. What am I?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

You see me once in June, twice in November, and not at all in May. What am I?

Guess the hidden movie name?