Which of the following statements about sterilization are correct?
Statement 1: Sterilization is achieved by a heat and chemicals alone.
Statement 2: Ultraviolet radiation cannot be used for sterilization.
a) True, False
b) True, True
c) False, True
d) False, False

Answer: d
Explanation: Sterilization can be achieved by using irradiation, high pressure, chemicals, chlorine dioxide gas, heat, filtration, ultraviolet radiation. The UV rays, X-rays, gamma rays are exposed on the packed materials for sterilization. The UV radiation has low penetration power. It is less effective but is safe compared to other rays.