Question

1. bleach is an example of which group of chemicals used for disinfection? a. heavy metals b. halogens c. quats d. bisbiguanides 8. which type of test is used to determine whether disinfectant solutions actively used in a clinical setting are being used correctly? a. disk - diffusion assay b. phenol coefficient test c. in - use test d. use - dilution test 9. the effectiveness of chemical disinfectants has historically been compared to that of which of the following? a. phenol b. ethyl alcohol c. bleach d. formaldehyde 10. what is the term used to describe what we do upon entering and exiting the lab?

Explanation:

• For question 7, bleach contains chlorine which is a halogen, so it belongs to halogens for disinfection.
• For question 8, an in - use test is used to check if disinfectant solutions are used correctly in a clinical setting.
• For question 9, the effectiveness of chemical disinfectants has been historically compared to that of phenol.
• For question 10, the term for what we do upon entering and exiting the lab is hand - washing to maintain hygiene and prevent contamination.

Answer:

1. B. halogens
2. C. in - use test
3. A. phenol
4. Hand - washing