JAMB - Chemistry (2001 - No. 4)
Cancerous growths are cured by exposure to
γ - rays
β - rays
α - rays
infrared rays
Explication
Gamma rays are used to treat cancer as part of a type of cancer treatment called radiation therapy. Gamma rays can pass through several inches of lead or a few feet of concrete. They can even pass through the human body, damaging tissue and DNA.