Choose or find odd word - Olympus , Apollo , Nataraj , Diana

D. DIANA

Choose or find odd word - Beaver , Alpaca , Walrus , Koala

C. WALRUS

Choose or find odd pair of words - (Profit : Loss) , (Wise : Foolish) , (Virtue : Vice) , (Seduce : Attract)

D. SEDUCE : ATTRACT

Choose or find odd word - Mercury , Acetone , Petrol , Kerosene

A. MERCURY

Choose or find odd letter group - AUDIO , ARISE , AWAKE , VIDEO

C. AWAKE