Final answer:
Alcohol-based hand gel may be used as an alternative to hand-washing before handling food and after using the washroom, but hand-washing with soap and water is still preferred.
Step-by-step explanation:
Alcohol-based hand gel may be used as an alternative to hand-washing in certain situations. One such situation is before handling food. This is because alcohol-based hand gel can help kill bacteria and prevent contamination of food. Another situation is after using the washroom. Hand gel can help kill germs that may be present on the hands after using the washroom. However, it is important to note that hand-washing with soap and water is still the preferred method of hand hygiene.