ServSafe Manager: Cleaning and sanitizing Questions
Cleaning versus sanitizing, sanitizer strength, dishwashing and three-compartment sinks.
90 questions in this topic. The quiz draws 20 at a time. Free, with no sign-up.
Cleaning and sanitizing practice quiz
- 20 questions · 30 minutes · pass mark 70%
- Answers and explanations are shown at the end, with every question to review.
Key numbers
- Manual wash water: at least 110°F, or the temperature on the cleaner's label
- Hot water sanitizing by hand: 171°F or above for at least 30 seconds
- Chlorine at 50 to 99 mg/L (ppm): 75°F at pH 8 or less, 100°F at pH 10 or less
- Iodine: 12.5 to 25 mg/L (ppm) at 68°F or above
- Quaternary ammonium: 75°F or above, at the strength on the label
Source: FDA Food Code 2022, 4-301.12, 4-501.19, 4-501.111, 4-501.114, 4-603.16, 4-703.11, 4-901.11
What are the 3 compartment sink steps?
A 3 compartment sink has one step per compartment: wash to remove soil, rinse off the cleaner, then sanitize with heat or chemicals. Let items air-dry.
10 sample cleaning and sanitizing questions and answers
10 of our 90 questions, with the answer and why.
1. What basic cleanliness condition must food-contact surfaces and utensils meet before their required sanitizing step?
Answer: Clean to sight and touch
- A) Only free of a strong odour
- B) Only visibly clean without considering residue detectable by touch
- C) Clean to sight and touch (correct answer)
- D) Only wiped until they look shiny from a distance
Why: The code requires food-contact surfaces and utensils to be visibly and tactually clean. Odour alone does not establish sight-and-touch cleanliness.
Source: FDA Food Code 2026, 4-601.11
2. Equipment operates in a qualifying refrigerated prep room held at 41°F (5°C) or below. With the other stated conditions met, which chart interval may apply?
Answer: 24 hours
- A) 36hours
- B) 48 hours
- C) No cleaning while the room stays cold
- D) 24 hours (correct answer)
Why: The refrigerated-room chart pairs 41°F or below with 24 hours. 36hours exceeds this refrigerated-room chart entry.
Source: FDA Food Code 2026, 4-602.11
3. Before the full wash cycle, plates carry heavy food debris. What precleaning step is specified?
Answer: Scrape debris to the appropriate waste destination or use a suitable prewash
- A) Scrape debris to the appropriate waste destination or use a suitable prewash (correct answer)
- B) Load heavily soiled plates without scraping because the main wash is hot
- C) Add sanitizer directly over the full food layer
- D) Skip precleaning whenever the rack is full
Why: The code calls for food-debris removal before effective washing. The precleaning rule still requires debris removal by scraping or a suitable prewash.
Source: FDA Food Code 2026, 4-603.12
4. In addition to cleaning before use and as needed during the day, what minimum applies to used warewashing equipment?
Answer: Clean it at least every 24 hours
- A) Clean it only every48hours
- B) Clean it at least every 24 hours (correct answer)
- C) Clean it only when the detergent container is replaced
- D) Never clean it because it washes other items
Why: The warewashing-equipment provision includes this daily minimum. 48hours exceeds the used-equipment minimum of at least every24hours.
Source: FDA Food Code 2026, 4-501.14
5. An iodine sanitizer meets its listed concentration and pH conditions but is only 60°F (16°C). Which temperature condition is missing?
Answer: At least 68°F (20°C)
- A) At least 41°F (5°C) only
- B) No minimum if the concentration is correct
- C) At least 68°F (20°C) (correct answer)
- D) At least60°F (16°C) whenever the concentration is correct
Why: The iodine provision specifies a minimum of 68°F. 41°F is below the listed iodine minimum.
Source: FDA Food Code 2026, 4-501.114
6. Newly sanitized utensils are still wet. What handling approach meets the drying provision before food contact?
Answer: Air-dry them or allow adequate draining as specified
- A) Rub them dry with the employee's apron
- B) Nest the utensils tightly so the remaining liquid cannot drain
- C) Cloth-dry wet utensils using a fresh towel instead of air drying
- D) Air-dry them or allow adequate draining as specified (correct answer)
Why: The provision permits air drying or use after adequate draining. An apron is not the specified post-sanitizing drying method.
Source: FDA Food Code 2026, 4-901.11
7. An approved detergent-sanitizer procedure has no distinct rinse between washing and sanitizing. Which product condition applies?
Answer: Use the same detergent-sanitizer in both steps
- A) Use the same detergent-sanitizer in both steps (correct answer)
- B) Use a different sanitizer without an approved basis for that rinse-free procedure
- C) Omit the sanitizing application entirely
- D) Replace the detergent-sanitizer with plain water for washing
Why: The no-distinct-rinse procedure specifies the same detergent-sanitizer. The cited method requires the same detergent-sanitizer in the washing and sanitizing steps.
Source: FDA Food Code 2026, 4-501.115
8. An ordinary hot-water dishmachine has no high-pressure wand-system exception. Which proposed fresh-rinse manifold setting exceeds the model-code upper limit?
Answer: 200°F (93°C)
- A) 180°F (82°C)
- B) 190°F (88°C)
- C) 194°F (90°C)
- D) 200°F (93°C) (correct answer)
Why: The proposed 200°F (93°C) setting exceeds the ordinary fresh-rinse manifold maximum of 194°F (90°C). A 194°F (90°C) setting is at the maximum rather than above it.
Source: FDA Food Code 2022, 4-501.112
9. A pathogen of concern on equipment is not controlled by the available sanitizers. What additional treatment does the 2024 supplement require?
Answer: Disinfection appropriate to that pathogen and surface
- A) Disinfection appropriate to that pathogen and surface (correct answer)
- B) Keep repeating the ineffective sanitizer step as the only treatment
- C) Skip treatment if ordinary food residue is no longer visible
- D) Assume the ordinary sanitizer controls every pathogen by definition
Why: The supplement requires disinfection when available sanitizers do not control the pathogen of concern. Repeating an ineffective available sanitizer does not meet the required disinfection response.
Source: Supplement to the 2022 FDA Food Code, 4-1001.11
10. A chlorine process uses 50 mg/L at pH 7.5 and 75°F (24°C), and its EPA-registered label allows the code's qualifying seven-second combination. Which minimum contact time belongs to that specific branch?
Answer: At least seven seconds
- A) At least seven seconds (correct answer)
- B) One second because the concentration is measured correctly
- C) Three seconds because the pH is below 8
- D) Five seconds because the solution is at least 75°F (24°C)
Why: This qualifying 50 mg/L, pH and temperature combination has a seven-second minimum consistent with the registered label. Correct concentration alone does not allow one-second contact.
Source: FDA Food Code 2022, 4-703.11
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