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

B. ECOLOGY

Choose or find odd word - Thermosphere , Stratosphere , Exosphere , Ionospher , Troposphere

A. THERMOSPHERE

Choose or find odd word - Stick , Needle , Thorn , Pin , Nail

A. STICK

Choose or find odd word - Pineapple , Orange , Malta , Banana , Lemon

D. BANANA

Choose or find odd word - Stereo , Transistor , Television , Radio , Loundspeaker

C. TELEVISION