(2025/2026) – 100 Questions & Answers with Detailed
Rationales | Learn2Serve Exam Prep Guide
1. What is the temperature danger zone for food safety?
A. 0°C–50°C
B. 5°C–60°C
C. 10°C–70°C
D. 15°C–80°C
Answer: B
Rationale: The danger zone is 5°C–60°C where bacteria multiply rapidly.
2. How long can food safely remain in the danger zone?
A. 1 hour
B. 2 hours
C. 4 hours
D. 6 hours
Answer: B
Rationale: Food should not remain in the danger zone for more than 2 hours.
3. What is the correct internal cooking temperature for poultry?
A. 63°C
B. 68°C
C. 74°C
D. 82°C
Answer: C
Rationale: Poultry must reach 74°C (165°F) to kill harmful pathogens.
4. Which is a biological contaminant?
A. Cleaning chemicals
B. Metal fragments
,C. Salmonella
D. Plastic pieces
Answer: C
Rationale: Salmonella is a bacteria and biological hazard.
5. What is the best way to prevent cross-contamination?
A. Use same cutting board
B. Store raw food above cooked food
C. Wash hands only once
D. Reuse gloves
Answer: B
Rationale: Raw foods stored above cooked foods prevent drips and contamination.
6. How long should hands be washed?
A. 5 seconds
B. 10 seconds
C. 20 seconds
D. 60 seconds
Answer: C
Rationale: Proper handwashing takes at least 20 seconds.
7. What sanitizer concentration is typically required?
A. 10 ppm
B. 25 ppm
C. 50–100 ppm
D. 500 ppm
Answer: C
Rationale: Most sanitizers are effective at 50–100 ppm chlorine concentration.
8. What is FIFO?
A. Food In Food Out
B. First In First Out
, C. Fast Inventory Food Order
D. Fresh Item Food Option
Answer: B
Rationale: FIFO ensures older stock is used first.
9. Which symptom requires food worker exclusion?
A. Headache
B. Sneezing
C. Jaundice with fever
D. Mild fatigue
Answer: C
Rationale: Jaundice with fever may indicate hepatitis A.
10. What temperature should refrigerators be kept at?
A. 10°C
B. 7°C
C. 5°C or below
D. 0°C
Answer: C
Rationale: Refrigerators must be 5°C or below to prevent bacterial growth.
11. Which food is considered TCS food?
A. Dry rice
B. Canned beans
C. Cooked chicken
D. Sugar
Answer: C
Rationale: Cooked chicken supports bacterial growth.
12. What is the correct thawing method?
A. Room temperature
B. Hot water