What is the longest word in the dictionary?

I have branches, but no fruit, trunk or leaves. What am I?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

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

Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?

How many triangles can you count in the figure given?

I look at you, you look at me I raise my right, you raise your left. What am I?