QUESTIONS AND VERIFIED ANSWERS UPDATED
2025
◉ Chemical indicator. Answer: A substance (as a dye) used to show
visually usually by its capacity for color change
◉ Alcohol based rub standard. Answer: 60%-90% ethanol or
isopropanol, rub till it evaporates, if it feels dry after 10-15 secs it
wasnt the right amount
◉ Biological indicator. Answer: an indicator consisting of bacterial
spores that is used as a quality control method in autoclaves to
confirm that sterilization has occurred
◉ High-level disinfection. Answer: kills all microorganisms except
spores and prions
◉ Intermediate-level disinfection. Answer: process that kills viruses,
bacteria and fungi but not spores
◉ Low-level disinfection. Answer: Kills some fungi and viruses, and
most bacteria, but is not effective against spores and TB