ServSafe Certification Cleaning and Sanitizing 2 — Questions and Answers
Question 1: What is the minimum contact time required when using chlorine sanitizer at 50–99 ppm concentration?
- 7 seconds (Correct answer)
- 30 seconds
- 60 seconds
- 2 minutes
Correct answer: 7 seconds
Chlorine sanitizer at 50–99 ppm requires a minimum contact time of 7 seconds to be effective.
Question 2: Which factor does NOT affect the effectiveness of a chemical sanitizer?
- Contact time
- Concentration
- Color of the sanitizer (Correct answer)
- Temperature of the solution
Correct answer: Color of the sanitizer
The color of a sanitizer has no bearing on its effectiveness; concentration, contact time, and temperature are the critical factors.
Question 3: A food handler notices the sanitizer solution looks cloudy and has a strong odor. What should they do?
- Continue using it since strong odor means it's effective
- Discard and prepare a fresh solution (Correct answer)
- Add more sanitizer to the existing solution
- Add hot water to clear the cloudiness
Correct answer: Discard and prepare a fresh solution
Cloudy sanitizer solution indicates it is dirty and has lost effectiveness; it must be discarded and replaced with a fresh batch.
Question 4: When sanitizing food-contact surfaces manually, what is the correct order of the steps?
- Sanitize, rinse, wash
- Wash, sanitize, rinse
- Rinse, wash, sanitize
- Wash, rinse, sanitize (Correct answer)
Correct answer: Wash, rinse, sanitize
The correct manual warewashing order is wash, rinse, then sanitize to ensure surfaces are clean before sanitizer is applied.
Question 5: A three-compartment sink is being set up. Which compartment should contain the sanitizing solution?
- First compartment
- Second compartment
- Third compartment (Correct answer)
- Any compartment as long as it is labeled
Correct answer: Third compartment
The third compartment of a three-compartment sink is always designated for the sanitizing solution.
Question 6: What is the primary purpose of rinsing equipment between the wash and sanitize steps?
- To cool the equipment before sanitizing
- To remove detergent that could reduce sanitizer effectiveness (Correct answer)
- To kill any remaining pathogens before sanitizing
- To check for remaining food debris
Correct answer: To remove detergent that could reduce sanitizer effectiveness
Rinsing removes detergent residue, which can neutralize chemical sanitizers and reduce their effectiveness.
Question 7: Which statement about air-drying sanitized equipment is correct?
- Towel-drying is preferred to speed up the process
- Air-drying is required to prevent recontamination from towels (Correct answer)
- Either method is acceptable as long as clean cloths are used
- Equipment should be dried immediately with paper towels only
Correct answer: Air-drying is required to prevent recontamination from towels
Sanitized equipment must be air-dried because towels can recontaminate surfaces even if they appear clean.
ServSafe Certification Cleaning and Sanitizing 2
What is the minimum contact time required when using chlorine sanitizer at 50–99 ppm concentration?