# Which of the following cannot be reliably used for handwashing?
A. Lysol
B. Cresol
C. Isopropyl alcohol
D. Chlorhexidine
The correct answer is A. Lysol.
Lysol is a phenolic compound derived from coal tar and is highly toxic to humans. It is recommended for disinfection of surfaces in hospital.
These can be reliably used for handwashing:
- Chlorhexidine
- Alcohols (isopropyl alcohol, ethyl alcohol)
- Iodine
- Cresol
- Chloroxylenol (dettol)
- Hexachlorophane
- Tincture of iodine
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