Choose or find odd word - Ranthamboor , Sunderban , Kaziranga , Ghana , Corundum

E. CORUNDUM

Choose or find odd word - Microscope , Telescope , Periscope , Stethoscope

D. STETHOSCOPE

Choose or find odd word - Blade , Axe , Scissors , Needle

D. NEEDLE

Choose or find odd word - Euphrates , Hwang Ho , Amazon , Brahmaputra , Indus

C. AMAZON

Choose or find odd word - Grasslands , Pampas , Downs , Prairies , Savanna

A. GRASSLANDS