Decode below rebus
D
N
A
T
S , D

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

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

It is a 5 letter word if you take away first letter it is something you get from sun, if you remove second letter you will get something to eat, if you remove third letter you get a word you use in pointing at and if you remove the fourth letter you get something to drink. What is it?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

What work can one never finish?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

I left my campsite and hiked south for 3 miles. Then I turned east and hiked for 3 miles. I then turned north and hiked for 3 miles, at which time I came upon a bear inside my tent eating my food! What colour was the bear?

What is wrong in the below Picture?