What or Which - Which question word is correct?

Decide whether What or Which is correct?

Example: _____ language is spoken in Denmark?

Answer: What language is spoken in Denmark?

1) colour is you pencil case?
2) picture did Henry paint, the left one or the right one?
3) language does Mr Miller teach, French or Italian?
4) hobbies does your friend have?
5) subject do you like better, Art or Music?
6) car is faster, the red one or the blue one?
7) time do you usually get up on Sundays?
8) juice do you prefer, orange juice or apple juice?
9) page are we on?
10) subject do you not like?