Choose or find odd word - Sleet , Fog , Hailstone , Vapour , Mist

D. VAPOUR

Choose or find odd number - 27 , 125 , 343 , 729 , 1321

E. 1321

Choose or find odd word - Axe , Sword , Knife , Showel , Saw

D. SHOWEL

Choose or find odd pair of words - (Mercury : Sun) , (Moon : Earth) , (Star : Galaxy) , (Wheel : Axle)

C. STAR : GALAXY

Choose or find odd letter group - BCDEI , PQRSW , LMNOS , TUVWA , HIKLO

E. HIKLO