Sunlight acts as sterilizing agent because_________________?
Correct answer: B. short wave lenght
- A. Long wavelength
- B. short wave lenght
- C. Ozone
- D. Heat
Explanation
The germicidal effect of sunlight is mainly due to its ultraviolet component, which has short wavelengths and damages microbial DNA. Heat and ozone may contribute in some settings but are not the main answer here.
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Practise Infection Control and Sterilisation
38 free Infection Control and Sterilisation MCQs from Microbiology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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