Choose or find odd number - 150 , 175 , 200 , 250

B. 175

Choose or find odd pair of words - (Broad : Wide) , (Light : Heavy) , (Tiny : Small) , (Big : Large)

B. LIGHT : HEAVY

Choose or find odd pair of words - (Tree : Branch) , (Hand : Finger) , (Table : Chair) , (Room : Floor)

C. TABLE : CHAIR

Choose or find odd word - Ballot , Manifesto , Election , Vote

C. ELECTION

Choose or find odd letter group - BCD , NPR , KLM , RQP , HGF

B. NPR