PPSC Past Paper Junior Clerk In Punjab Police Department-2018 Solved MCQs, Everyday Science MCQs, PPSC Solved Past Papers MCQsWhich poisonous gas produced when coal is burned without enough air supply?A. Carbon Monoxide B. Nitrogen Oxide C. Ammonia D. Hydrogen Fill in the blanks: Salma was ill_____ fever?Choose the correct meaning of idiom: “A dark horse”?
