Choose or find odd word - Ear , Lung , Eye , Heart , Kidney

D. HEART

Choose or find odd letter group - BDGK, JLOS, NPSW, MORU, HJMQ

D. MORU

Choose or find odd number pair - (7 - 18) , (9 - 26) , (11 - 36) , (13 - 42)

C. 11 - 36

Choose or find odd word - Archaeology , Ecology , Epigraphy , Palaeontology

B. ECOLOGY

Choose or find odd word - Pupil , Iris , Cornea , Medulla , Retina

D. MEDULLA