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

Find the smallest sentence with all the English alphabet.

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

What has no start, end, or centre?

What has one eye, but can’t see?

Which is the rope you never skip with?

When we see 2 but call 10?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.