Choose or find odd word - Cigar , Cigarette , Tobacco , Pipe , Hookah

C. TOBACCO

Choose or find odd pair of words - (Mulder : Proteins) , (Curie : Radium) , (Becquerel : Radioactivity) , (Einstein : Television)

D. EINSTEIN : TELEVISION

Choose or find odd word - Mustard , Rapeseed , Sesame , Cashewnut , Groundnut

D. CASHEWNUT

Choose or find odd word - Arc , Diagonal , Tangent , Radius , Diameter

B. DIAGONAL

Choose or find odd word - Cliff , Canyon , Gulch , Gorge , Ravine

A. CLIFF