Choose or find odd word - Wheat , Mustard , Rice , Gram , Peanut

C. RICE

Choose or find odd word - Discus , Spear , Javelin , Hockey

B. SPEAR

Choose or find odd pair of words - (Captain : Team) , (Boss : Gang) , (Prime Minister : Cabinet) , (Artist : Troupe)

D. ARTIST : TROUPE

Choose or find odd letter group - ALMZ , BTUY , CPQX , DEFY

D. DEFY

Choose or find odd word - Tonne , Pint , Gallon , Litre

A. TONNE