Find the word which has a different sound in the part underlined

I. Find the word which has a different sound in the part underlined.
1. A. exhibition B. question C. collection D. tradition
2. A. pleasure B. leisure C. closure D. sure
3. A. discussion B. decision C. treasure D. vision
4. A. saxophone B. music C. so D. expensive
5. A. similarity B. talent C. happy D. hard
II. Find which word does not belong to each group.
6. A. saxophone B. guitar C. violin D. artist
7. A. camera B. photograph C. portrait D. opera
8. A. ballet B. pop C. rock D. rap
9. A. singer B. actor C. film director D. film producer
10. A. canvas B. water puppet C. crayon D. penci