Question Detail
Question
Why is steam more efficient than air for sterilization?
Correct Answer
Option C is the correct answer.
Detailed Explanation
Steam is more efficient for sterilization due to its high latent heat of vaporization. When steam condenses on cooler surfaces, it releases a large amount of thermal energy (latent heat) at a constant temperature, which rapidly penetrates and kills microorganisms.
Hint
Consider the physical properties of steam as it changes state upon contact with a cooler surface.