Occupational Safety and Health Administration (OSHA) SLC Practice Exam

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What is the recommended temperature for washing hands?

Cold
Cool
Warm
Hot

The correct answer is: Warm

The recommended temperature for washing hands is warm water. Using warm water is effective because it helps to activate soap more effectively, promoting better lathering and cleaning of the skin. This temperature is comfortable for most people, encouraging them to wash their hands for the recommended duration, which is at least 20 seconds. Warm water can also effectively remove oils and dirt from the skin without causing irritation, making it a practical choice for maintaining hygiene. In contrast, cold water may not be as effective in activating the soap and could be uncomfortable for users, possibly leading to inadequate handwashing. Cool water, while slightly better than cold, still doesn't provide the same benefit as warm water. Hot water could cause skin irritation and dryness, which is counterproductive to maintaining skin health, and may lead to avoidance of handwashing over time.