Choose or find odd pair of words - (Taiwan : Taipei) , (China : Mongolia) , (Iran : Tehran) , (Japan : Tokyo)

B. CHINA : MONGOLIA

Choose or find odd pair of words - (Student : Scholar) , (Paddy : Rice) , (Soldier : Warrior) , (Politician : Leader)

B. PADDY : RICE

Choose or find odd pair of words - (Broom : Sweep) , (Spoon : Feed) , (Nut : Crack) , (Soap : Bathe)

C. NUT : CRACK

Choose or find odd pair of words - (Door : Bang) , (Piano : Play) , (Rain : Patter) , (Drum : Beat)

B. PIANO : PLAY

Choose or find odd pair of words - (Pistol : Gun) , (Knife : Dagger) , (Engine : Train) , (Car : Bus)

C. ENGINE : TRAIN