This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Lary ngoscopes are sterilized by 
Select and explain. 
A. Glutaraldehyde, B. Formalin, C. Betadine, D. Boiling
A: Glutaraldehyde
Answer: A: Glutaraldehyde 
Explanation: o Laryngoscope should be cleaned before and aer use with spirit.
o Disinfecon can be done once a day by removing the bulb and immersing the blade in 2% cidex (glutaraldehyde) for 10 minutes.
o They should be sterilized once a week by immersing in cidex for 10 hours or by autoclavin