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

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

John and Jill are madly in love with each other. To remind Jill of his pure love, John wants to send her a ring by post but in their country where burglary is quite prominent, any package that is not locked comes under the risk of being stolen for the contents.

John and Jill possess many padlocks but neither one of them has the other key.

Can you find a way John can send the ring to Jill safely?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

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.

What is the riddle which can be asked all day with a different correct answer each time.

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?