Colorado Nursing Home Administrators (NHA) Practice Exam

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At what temperature and for how long should the washing machine operate to ensure proper washing and rinsing?

120 F for 15 minutes
125 F for 20 minutes
130 F for 25 minutes
135 F for 30 minutes

The correct answer is: 120 F for 15 minutes

The correct temperature and duration for a washing machine to ensure proper washing and rinsing will depend on several factors such as the type of fabric, level of soiling, and type of detergent. However, in general, the ideal temperature for washing clothes is between 120-130 degrees Fahrenheit. Going above this temperature may cause damage to certain fabrics and decrease the effectiveness of the detergent. As for the duration, 15 minutes is generally enough time for the machine to agitate and remove dirt and stains from the clothes. Any longer than that may unnecessarily wear out the clothes or cause tangling. Therefore, option A of 120 degrees Fahrenheit for 15 minutes is the most suitable answer. Options B, C, and D suggest higher temperatures and longer durations, which may not be necessary and could potentially harm the clothes.