Choose the word whose underlined part is pronounced differently

A. Choose the word whose underlined part is pronounced differently 
1.  A yoga  B show  C clothes  D flower 
2.  A benefit  B generous  C perpercussion  D selfish 
B.  Choose the word that has a different stressed syllable from the rest 
3.  A disphay  B argue  C science  D famous 
4  A badminton  B impatient  C popular  D balcony