Answer to Question 1
ANS: C
Feedback
A Incorrect: H2O2 deactivates rapidly when exposed to the air.
B Incorrect: Even in a closed container, solutions should not be prepared 24 hours in advance, unless they are enclosed in an airtight container that protects the solution from light.
C Correct: H2O2 needs to be stored in a dark, tightly-capped container.
D Incorrect: H2O2 acts immediately and should be rinsed off with normal saline.
Answer to Question 2
ANS: A
Feedback
A Correct: This is the most important advantage; its antibacterial effects remain on the skin but it does not absorb through the skin.
B Incorrect: This is not the most important advantage.
C Incorrect: This is a false statement.
D Incorrect: This is a false statement.