Choose or find odd pair of words - (Pistol : Gun) , (Knife : Dagger) , (Engine : Train) , (Car : Bus)

C. ENGINE : TRAIN

Choose or find odd letter group - RUX , GJM , YBE , ZCF , NPS

E. NPS

Choose or find odd word - Cancel , Change , Repeal , Revoke , Rescind

B. CHANGE

Choose or find odd word - Granite , Lignite , Peat , Anthracite , Bituminous

A. GRANITE

Choose or find odd word - Arrow , Missile , Sword , Bullet , Spear

C. SWORD