Choose the word who underlined part s pronounced differently from that of the others in each group

Ex1. Choose the word who underlined part s pronounced differently from that of the
others in each group.
1.A. polio B. police C. polite D. pollute
2.A. chaos B. character C. charity D. chord
3. A. southern B. mathematics C. breath D. truth

Ex2. Choose the word with the different stress pattern.
1. A. refuge B. electronic C. education D. recreation
2. A. assassinate B. equality C. intelligence D. understanding