Choose or find odd letter group - PUT , END , OWL , ARM

A. PUT

Choose or find odd word - Pound , Yen , Ounce , Franc , Dollar

C. OUNCE

Choose or find odd letter group - AUgPZ, MXiDV, KFeCO, YGLhT, UHmQY

D. YGLHT

Choose or find odd word - Piano , Typewriter , Computer , Calculator

A. PIANO

Choose or find odd pair of words - (Ornithology : Birds) , (Mycology : Fungi) , (Biology : Botany) , (Phycology : Algae) , (Entomology : Insects)

C. BIOLOGY : BOTANY