Choose or find odd word - Mongolia , China , Burma , Afghanistan , Bangladesh

A. MONGOLIA

Choose or find odd word - Hydrazine , Warfarin , Malathion , Agrosan , Sulphur

A. HYDRAZINE

Choose or find odd pair of words - (Door : Bang) , (Piano : Play) , (Rain : Patter) , (Drum : Beat)

B. PIANO : PLAY

Choose or find odd pair of words - (Broom : Sweep) , (Spoon : Feed) , (Nut : Crack) , (Soap : Bathe)

C. NUT : CRACK

Choose or find odd number pair - (13 - 31) , (45 - 54) , (16 - 61) , (71 -88)

A. 71 - 88