Choose or find odd letter group - BDYW , CEXZ , DFYW , EGXV

B. CEXZ

Choose or find odd word - Arc , Diagonal , Tangent , Radius , Diameter

B. DIAGONAL

Choose or find odd word - Leone , Dirham , Baht , Lempire , Cortes

E. CORTES

Choose or find odd word - Mew , Howl , Bark , Grunt , Shout

E. SHOUT

Choose or find odd pair of words - (Chaff : Wheat) , (Grit : Pulses) , (Grain : Crop) , (Dregs : Wine)

C. GRAIN : CROP