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

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Use the digits from 1 up to 9 and make 100.

Follow the rules.
=> Each digit should be used only once.
=> You can only use addition.
=> For making a number, two single digits can be combined (for example, 4 and 2 can be combined to form 42 or 24)
=> A fraction can also be made by combining the two single digits (for example, 4 and 2 can be combined to form 4/2 or 2/4)

Question: how can we do this?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

Assume the given figure to be a delicious doughnut. Yes, now you can concentrate more on the puzzle. So you have this delicious doughnut in your refrigerator when your friends come knocking at the door. There are eight of them. Now you have to make three cuts in this doughnut so that each one of you nine people can enjoy a piece of it. Neither you nor your friends would mind the size of their piece as long as they are getting it. How will you do it?

1. What does:
TIM JOB
represent?

2. What does:
MO_ _
represent?

There is something which you can be arrested for attempting but not for successfully completing.

What is the centre of gravity?