Level 2 Food Hygiene Certificate Food Contamination 2 — Questions and Answers
Question 1: Allergen contamination in a food business is most effectively controlled by:
- Advising customers to declare their own allergies before ordering
- Implementing strict segregation of allergenic ingredients and thorough cleaning of equipment between uses (Correct answer)
- Posting allergen information only on the website
- Using the same cooking oil for all foods
Correct answer: Implementing strict segregation of allergenic ingredients and thorough cleaning of equipment between uses
Effective allergen control requires strict segregation of allergenic ingredients, dedicated equipment, thorough cleaning between uses, and clear labelling — not merely relying on customers to declare their allergies.
Question 2: Which bacterium is most commonly associated with reheated or cooked rice left at room temperature?
- Listeria monocytogenes
- Bacillus cereus (Correct answer)
- Clostridium botulinum
- Campylobacter jejuni
Correct answer: Bacillus cereus
Bacillus cereus produces heat-resistant spores that survive cooking. When cooked rice is left at room temperature, the spores germinate and produce toxins, causing food poisoning.
Question 3: The term 'vehicle of contamination' refers to:
- A delivery lorry that transports contaminated food
- An object, person, or pest that carries contamination from one place to another (Correct answer)
- The original source of the contaminant
- The food product that is contaminated
Correct answer: An object, person, or pest that carries contamination from one place to another
A vehicle of contamination is anything (hands, equipment, cloths, pests) that carries contamination from a source to food. It is the means by which contamination is transferred.
Question 4: Which type of contamination would be caused by a food handler not washing their hands after handling raw eggs?
- Physical contamination
- Chemical contamination
- Allergenic contamination
- Microbiological (biological) contamination (Correct answer)
Correct answer: Microbiological (biological) contamination
Raw eggs can carry Salmonella bacteria. Not washing hands after handling them and then touching ready-to-eat food causes microbiological (biological) contamination.
Question 5: Which of the following is a common source of Listeria monocytogenes contamination?
- Fully cooked hot meals served immediately
- Chilled ready-to-eat foods such as soft cheeses and pâté (Correct answer)
- Dry goods stored at room temperature
- Heavily salted cured meats cooked to 75°C
Correct answer: Chilled ready-to-eat foods such as soft cheeses and pâté
Listeria monocytogenes is particularly associated with chilled ready-to-eat foods such as soft cheeses, pâté, and smoked fish. It can grow at refrigeration temperatures, making it especially dangerous.
Question 6: To prevent allergen cross-contamination, food handlers should:
- Use the same chopping board for all foods to save time
- Use colour-coded equipment and wash hands between handling different ingredients (Correct answer)
- Inform customers that traces of allergens may be present without taking any action
- Only separate nut-containing foods from others
Correct answer: Use colour-coded equipment and wash hands between handling different ingredients
Using dedicated, colour-coded equipment and washing hands between handling different ingredients (especially allergenic ones) are key controls to prevent cross-contamination with allergens.
Level 2 Food Hygiene Certificate Food Contamination 2
Allergen contamination in a food business is most effectively controlled by: