Choose the word whose underlined part differs from the other three in pronunciation in the following question

Choose the word whose underlined part differs from the other three in pronunciation in the following question.
1. A. disappear B. planets C. Mars D. Venus
Choose the word whose underlined part differs from the other three in pronunciation in the following question.
2. A. exciting B. living C. gravity D. billion
Choose the word whose underlined part differs from the other three in pronunciation in the following question.
3. A. scientist B. life C. excited D. similar
Choose the word whose primary stress is NOT placed on the second syllable.
4. A. interesting B. polluting C. preventing D. protecting
Choose the word whose primary stress is NOT placed on the first syllable.
5. A. fascinating B. swimming C. exciting D. building