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

C. WALRUS

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

D. DIANA

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

A. MERCURY

Choose or find odd word - Nun , Knight , Monk , Priest , Padre

B. KNIGHT

Choose or find odd letter group - ABDG , IJLO , MNPS , RSUY , PQSV

D. RSUY