Choose or find odd word - Sweep , Wipe , Scrub , Wash , Stain

E. STAIN

Choose or find odd letter group - PRT , MOQ , GEC , TVX , SUW

C. GEC

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

C. AWAKE

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

C. WALRUS

Choose or find odd pair of words - (Aphid : Paper) , (Moth : Wool) , (Termite : Wood) , (Locust : Plant)

A. APHID : PAPER