81 x 9 = 801. What must you do to make the this equation true?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

A car is crossing a 20 km-long bridge. The bridge can support at most 1500kg of weight over it. If somehow, the weight on the bridge becomes more than that, it will break.

Now, the weight of the car is exactly 1500kg. At the midway, a bird comes and sits on the roof of the car. This bird weighs exactly 200 grams.
Can you tell if the bridge breaks at this point or not?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

Can you find the mistake in the below statement?

Can you make a six-letter word using the letters N, A and B ?

Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?