Choose or find odd letter group - PENAL , IDHNI , RUUD , KRTSINSA

A. PENAL

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

D. EINSTEIN : TELEVISION

Choose analogous pair - Water : Thirst

D. RAIN : THROAT

Choose or find odd number - 751, 734, 981, 853, 532

A. 751

Choose analogous pair - Crown : Royal

D. CRUCIFIX : RELIGION