How stupid are you?

This is to test your intelligence NO LOOKING UP ANSWERS!

1 What is it called when it's hard to use something in a different way?
2 What sign is Adolf Hitler?
3 What is a step by step process by definition?
4 What comes after six?
5 What's the biggest monkey in the world?
6 Jallio has 7 brothers and sisters and her parents. How many people are in their family?
7 Last, why does your brain have such a unique design?