Choose or find odd word - Nail , Feather , Trunk , Fir , Tail

D. FIR

choose odd numeral pair/group -
( 5:50 ), ( 8:128 ), ( 11:242 ), ( 15:370 )

A. 15:370

Choose or find odd word - Thyroxine , Adrenalin , Iodine , Insulin

C. IODINE

Choose or find odd word - Chameleon, Crocodile, Alligator, Locust, Salamandar

D. LOCUST

Choose or find odd letter group - XZCG , OQTX , IMNQ , EGJN

C. IMNQ