Which sentence uses the word whose correctly?

1. whose the best person to serve as president of the youth in government club?

2. my uncle, whose chief deputy of the circuit court, allowed me to come to work with him one day to understand better what he does.

3. after finding the can of soda in the classroom, the teacher turned to the class and asked, “whose can of soda is this? ”

4. a panel of judges determines whose going to receive the crafts award for best of show.