The tip of the match-stick contains A. Phosphorus pentoxide B. White phosphorus C. Red phosphorus D. Phosphorus trichloride

The correct answer is C. Red phosphorus.

White phosphorus is a highly flammable and toxic substance that is not used in matchsticks. Phosphorus pentoxide is an oxide of phosphorus that is not used in matchsticks. Phosphorus trichloride is a chloride of phosphorus that is not used in matchsticks.

Red phosphorus is a less flammable and less toxic form of phosphorus that is used in matchsticks. When red phosphorus is struck against the rough surface of the matchbox, it