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Dubai PIC Food Safety Exam study materials
Dubai PIC Food Safety Exam study resources

Dubai PIC Food Safety Exam practice questions

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Question 1Foodborne Illness and Food Safety Hazards

Which type of bacteria is most commonly associated with foodborne illness caused by improper reheating of cooked rice?

  1. Clostridium botulinum
  2. Listeria monocytogenes
  3. Bacillus cereus Correct answer.
  4. Vibrio parahaemolyticus

Explanation

Cooked rice left at ambient temperature allows Bacillus cereus spores to germinate and produce toxins, and reheating does not reliably destroy the heat-stable emetic toxin. The other organisms listed are linked to different foods and control measures.

Question 2Foodborne Illness and Food Safety Hazards

What is the primary reason that Staphylococcus aureus food poisoning occurs so quickly after eating contaminated food?

  1. The spores germinate rapidly in the stomach
  2. The organism produces gas that distends the gut
  3. The toxin is pre-formed in the food before consumption Correct answer.
  4. The bacteria invade the intestinal lining within minutes

Explanation

Staphylococcal food poisoning is an intoxication: the enterotoxin is produced in the food during temperature abuse and is consumed already formed, so onset can occur within a few hours. The heat-stable toxin is not destroyed by normal cooking.

Question 3Foodborne Illness and Food Safety Hazards

Which control measure is most effective at preventing illness from Clostridium botulinum in vacuum-packed fish?

  1. Washing the fish in chlorinated water
  2. Maintaining strict chilled storage and limiting shelf life Correct answer.
  3. Adding vinegar to the surface before packing
  4. Packing the fish with more air in the bag

Explanation

C. botulinum is anaerobic and its spores can germinate in vacuum-packed products if temperatures are abused. Consistent refrigeration below the growth range, combined with shelf-life limits, is the key control for these products.

Question 4Foodborne Illness and Food Safety Hazards

A food handler develops fever, vomiting and diarrhoea and is diagnosed with norovirus. What is the correct action?

  1. Return to work once the fever subsides
  2. Exclude from food handling duties until symptom-free for the required period Correct answer.
  3. Move to a role handling only wrapped foods
  4. Continue working but wear gloves at all times

Explanation

Norovirus is highly infectious and spreads easily via hands and surfaces. Infected food handlers must be excluded from food handling until they have been symptom-free for the period specified by the regulator, because shedding can continue after symptoms resolve.

Question 5Foodborne Illness and Food Safety Hazards

Which virus is most commonly transmitted to humans through consumption of bivalve shellfish such as oysters?

  1. Rotavirus
  2. Norovirus Correct answer.
  3. Hepatitis E
  4. Hepatitis A

Explanation

Bivalves filter large volumes of water and concentrate viruses; norovirus is the leading cause of shellfish-associated viral gastroenteritis. Depuration does not reliably remove the virus, so source control and cooking are important.

Question 6Foodborne Illness and Food Safety Hazards

Which parasite is commonly associated with undercooked pork and can cause muscle pain and fever?

  1. Entamoeba histolytica
  2. Cryptosporidium parvum
  3. Trichinella spiralis Correct answer.
  4. Giardia lamblia

Explanation

Trichinella larvae encyst in pork muscle and are released when the meat is eaten undercooked, causing trichinellosis. Thorough cooking of pork to a safe internal temperature destroys the larvae.

Question 7Foodborne Illness and Food Safety Hazards

Which of the following is a key characteristic that distinguishes viruses from bacteria in food safety terms?

  1. Viruses produce heat-stable toxins in food
  2. Viruses cannot multiply in food and require a host cell Correct answer.
  3. Viruses are always killed by refrigeration
  4. Viruses grow well on dry surfaces

Explanation

Foodborne viruses do not replicate in food; they only multiply inside a living host cell. This means the risk in food is based on contamination level, and control relies on preventing contamination and thorough cooking.

Question 8Foodborne Illness and Food Safety Hazards

Which of the following is an example of a biological food safety hazard?

  1. Salmonella in raw poultry Correct answer.
  2. Cleaning chemical residue on a plate
  3. A metal shaving in a loaf of bread
  4. Glass fragments in a dessert

Explanation

Biological hazards are living organisms or their toxins, such as bacteria, viruses, parasites and moulds. Salmonella is a bacterium and is a classic biological hazard in raw poultry.

Question 9Foodborne Illness and Food Safety Hazards

A chef finds a broken piece of blue plastic in a bag of frozen peas. What type of hazard is this?

  1. Chemical
  2. Allergenic
  3. Biological
  4. Physical Correct answer.

Explanation

Foreign objects that can cause injury or harm when consumed are physical hazards. Hard or sharp materials such as plastic fragments, glass and metal must be controlled by inspection and supplier assurance.

Question 10Foodborne Illness and Food Safety Hazards

Which practice best prevents the transfer of allergens from one food to another in a busy kitchen?

  1. Cleaning and sanitising utensils and surfaces between allergen and non-allergen tasks Correct answer.
  2. Storing all dry ingredients in identical unlabelled containers
  3. Using the same fryer oil for all products to save time
  4. Relying on visible inspection of equipment before use

Explanation

Allergen cross-contact is controlled by effective cleaning and sanitising of equipment and surfaces between tasks, along with separate utensils where needed. Allergens are not reliably removed by visual inspection or shared equipment.

Question 11Foodborne Illness and Food Safety Hazards

Which of the following is a recognised symptom of anaphylaxis requiring immediate emergency action?

  1. Slight stomach discomfort after a meal
  2. A runny nose without other symptoms
  3. Mild itching on the forearm
  4. Difficulty breathing and swelling of the throat Correct answer.

Explanation

Anaphylaxis is a severe, potentially life-threatening allergic reaction characterised by airway swelling, breathing difficulty and a rapid drop in blood pressure. Immediate emergency medical help and adrenaline administration are required.

Question 12Foodborne Illness and Food Safety Hazards

Which of the following is a chemical hazard that can arise from poor maintenance of food equipment?

  1. Mould growing on a damp wall
  2. Lubricating oil leaking into a food contact surface Correct answer.
  3. A hair falling into an open container
  4. A fly landing on uncovered food

Explanation

Chemical hazards include substances such as lubricants, cleaning agents and pesticides that can contaminate food. A leak from equipment introduces a chemical contaminant directly onto food contact surfaces.

Question 13Foodborne Illness and Food Safety Hazards

Why is the presence of histamine in spoiled scombroid fish such as tuna a serious food safety concern?

  1. The toxin is neutralised by lemon juice
  2. The toxin is heat-stable and can cause illness even after cooking Correct answer.
  3. The toxin only affects the appearance of the fish
  4. The toxin is destroyed by freezing and is therefore harmless

Explanation

Histamine forms when scombroid fish are temperature-abused, and it is heat-stable so cooking does not remove the risk. Illness resembles an allergic reaction, with flushing, headache and gastrointestinal symptoms.

Question 14Foodborne Illness and Food Safety Hazards

Which of the following is the most reliable way to inactivate bacterial vegetative cells in food during cooking?

  1. Relying on the colour of the food surface
  2. Cooling the food rapidly after brief heating
  3. Achieving a sufficiently high internal temperature for the required time Correct answer.
  4. Adding salt to the cooking water

Explanation

Vegetative bacteria are destroyed when the food reaches a sufficiently high internal temperature held for the required time. Visual cues such as surface colour are unreliable indicators of safety.

Question 15Foodborne Illness and Food Safety Hazards

What does the term 'spore-former' mean in relation to foodborne bacteria?

  1. The organism cannot survive cooking
  2. The organism can form a dormant, highly resistant structure Correct answer.
  3. The organism produces toxins only in the refrigerator
  4. The organism reproduces only in the presence of oxygen

Explanation

Spore-forming bacteria such as Bacillus and Clostridium can form spores that resist heat and adverse conditions, allowing survival of cooking and later germination. This is why spore-formers are a concern in foods held warm for long periods.

Question 16Foodborne Illness and Food Safety Hazards

Which of the following is the most appropriate action when a food handler is diagnosed with typhoid fever?

  1. Exclude from all food handling duties and follow public health advice Correct answer.
  2. Allow work if the handler has no visible symptoms
  3. Allow work if the handler wears a face mask
  4. Allow work in the dry store only

Explanation

Typhoid fever is a serious bacterial infection that can be shed in faeces and urine, and some individuals become carriers. Exclusion from food handling and compliance with public health guidance are required to protect consumers.

Question 17Foodborne Illness and Food Safety Hazards

Which of the following is a common source of Listeria monocytogenes contamination in ready-to-eat foods?

  1. Sealed dry goods such as flour
  2. Damp cooling and processing environments Correct answer.
  3. Dry, well-ventilated storage rooms
  4. Frozen foods kept below -18°C

Explanation

Listeria is a psychrotrophic organism that can establish in damp, cool processing environments and form biofilms on equipment. It then contaminates ready-to-eat foods that receive no further cooking.

Question 18Foodborne Illness and Food Safety Hazards

Which of the following best describes a 'carrier' in the context of foodborne illness?

  1. A food that spoils rapidly at room temperature
  2. A chemical that preserves food
  3. A piece of equipment that retains heat
  4. A person who harbours a pathogen and can transmit it without obvious illness Correct answer.

Explanation

A carrier is an individual who harbours a pathogen, sometimes without symptoms, and can shed it to contaminate food. Carriers are important in the spread of organisms such as Salmonella Typhi and Staphylococcus aureus.

Question 19Foodborne Illness and Food Safety Hazards

Which of the following is the most important reason to keep food out of the temperature danger zone during preparation?

  1. To improve the flavour of the final dish
  2. To limit the time bacteria have to multiply to unsafe levels Correct answer.
  3. To reduce the amount of cooking oil needed
  4. To prevent the food from changing colour

Explanation

The danger zone is the temperature range in which bacteria multiply most rapidly. Limiting the time food spends in this range is a fundamental control to prevent bacterial growth to unsafe levels.

Question 20Foodborne Illness and Food Safety Hazards

A restaurant receives a delivery of chilled chicken that is warm to the touch. What is the most appropriate action?

  1. Reject the delivery and record the reason Correct answer.
  2. Accept the delivery and store it in a warm area
  3. Accept the delivery and cook it later that day
  4. Accept the delivery and freeze the chicken immediately

Explanation

Chilled high-risk foods must arrive within the specified cold temperature range. If the delivery is too warm, it indicates temperature abuse and the batch should be rejected and recorded.

Question 21Foodborne Illness and Food Safety Hazards

Which of the following is a characteristic of a foodborne intoxication rather than a foodborne infection?

  1. Illness results from a toxin already present in the food Correct answer.
  2. The onset is always delayed by several days
  3. Illness requires the organism to multiply in the gut
  4. The illness is caused only by parasites

Explanation

In an intoxication, the toxin is produced in the food before consumption and causes illness shortly after eating. Infections, by contrast, require ingestion and multiplication of the organism in the body.

Question 22Foodborne Illness and Food Safety Hazards

Which condition most favours the growth of most foodborne bacteria?

  1. Acidic food held frozen
  2. Dry food held at chilled temperature
  3. Moist food held at warm ambient temperature Correct answer.
  4. Salty food held in a vacuum pack under refrigeration

Explanation

Most foodborne bacteria need moisture, nutrients and warmth to multiply quickly. Moist food held in the warm danger zone provides ideal conditions for rapid growth.

Question 23Foodborne Illness and Food Safety Hazards

Which of the following best explains why mouldy food should not simply have the mould cut off before sale or service?

  1. Mould only grows on the surface and is always harmless
  2. Mould is a chemical hazard that is destroyed by heat
  3. Cutting off the mould makes the food safe for everyone
  4. Mould hyphae and mycotoxins may extend into the food beyond the visible area Correct answer.

Explanation

Visible mould may be only the surface growth, while hyphae and mycotoxins can penetrate deeper into soft foods. Some mycotoxins are heat-stable, so trimming is not a reliable safety measure.

Question 24Foodborne Illness and Food Safety Hazards

What is the main food safety concern with keeping raw and cooked foods together in the same refrigerator?

  1. Cross-contamination from raw juices dripping onto cooked food Correct answer.
  2. The refrigerator using too much energy
  3. The raw food losing its colour
  4. The cooked food becoming too cold

Explanation

Raw foods such as meat and poultry can carry pathogens that drip onto ready-to-eat foods below. Storing raw foods below cooked or ready-to-eat foods, in covered containers, prevents cross-contamination.

Question 25Foodborne Illness and Food Safety Hazards

Which of the following is the most appropriate way to manage the risk of aflatoxin in stored nuts and grains?

  1. Keeping the products dry and cool to prevent mould growth Correct answer.
  2. Storing the products in warm, humid conditions
  3. Washing the products in water before storage
  4. Adding colouring agents to the products

Explanation

Aflatoxin is produced by moulds such as Aspergillus flavus when nuts and grains are stored in warm, humid conditions. Keeping products dry and cool prevents mould growth and toxin formation.

Question 26Foodborne Illness and Food Safety Hazards

Which of the following best describes the incubation period of a foodborne illness?

  1. The time between eating the contaminated food and the appearance of the first symptoms Correct answer.
  2. The duration for which a person remains infectious after recovering
  3. The time required to cook food to a safe internal temperature
  4. The time it takes for a food to spoil after being left at room temperature

Explanation

The incubation period is the interval between exposure to a hazard (usually through eating contaminated food) and the onset of symptoms. It varies by organism and helps investigators link illness to a particular meal or food. It is not related to spoilage, cooking times, or how long a person stays infectious.

Question 27Foodborne Illness and Food Safety Hazards

A food handler is preparing raw chicken and then wipes the same knife with a dry cloth before slicing cooked ham. Which type of hazard transfer is this an example of?

  1. Adulteration
  2. Cross-contamination Correct answer.
  3. Intoxication
  4. Spoilage

Explanation

Cross-contamination occurs when pathogens or other hazards are transferred from a contaminated source (such as raw poultry) to a ready-to-eat food via equipment, hands, or surfaces. Using the same knife without proper cleaning and sanitising spreads bacteria onto the ham. The other terms describe different concepts and do not fit this transfer scenario.

Question 28Foodborne Illness and Food Safety Hazards

Which of the following is the most appropriate control measure for a food business to reduce the risk of Clostridium botulinum growth in vacuum-packed chilled fish?

  1. Keeping the product in the vacuum pack at ambient temperature to allow the fish to cure
  2. Adding more salt to the surface of the fish just before packaging
  3. Washing the fish in chlorinated water immediately before vacuum packing
  4. Storing the product consistently below the chilled temperature limit and limiting its shelf life Correct answer.

Explanation

Clostridium botulinum is an anaerobic spore-former, and vacuum packing removes oxygen, so growth must be controlled by other hurdles. Reliable refrigeration below the specified chilled limit plus a controlled shelf life keeps the product out of the conditions that permit toxin formation. Surface salting, ambient storage, or a single wash does not provide a dependable barrier.

Question 29Foodborne Illness and Food Safety Hazards

A customer develops facial flushing, a burning sensation, headache, and a rash within about 30 minutes of eating grilled mackerel at a restaurant. What is the most likely explanation?

  1. Viral gastroenteritis from the fish
  2. A mould producing mycotoxins in the fish
  3. An infection caused by Salmonella in the fish
  4. Pre-formed histamine toxin in the fish Correct answer.

Explanation

Rapid onset of flushing, burning, headache, and rash shortly after eating scombroid fish such as mackerel points to histamine toxicity. The toxin forms when fish are poorly temperature-controlled and bacterial enzymes convert histidine to histamine, and it is not destroyed by cooking. Viral, Salmonella, and mould explanations do not match this very rapid symptom pattern.

Question 30Foodborne Illness and Food Safety Hazards

During an outbreak investigation, several people who ate at the same restaurant become ill, but staff who ate the same main dishes did not. Which finding would most strongly support a single contaminated food item as the source?

  1. Illness is statistically associated with one specific menu item that the unaffected staff did not consume Correct answer.
  2. Illness occurs among both diners and staff who ate the same main dishes
  3. Symptoms began at widely different times over several days with no common meal
  4. All affected diners sat at the same table but ordered different dishes

Explanation

A strong statistical association between illness and one particular menu item, especially when people who did not eat that item stayed well, is the classic epidemiological signal of a contaminated food vehicle. Comparing attack rates among those who ate and did not eat the suspect item isolates the source. The other findings either weaken the link or point to other explanations.

Question 31Personal Hygiene and Hand Hygiene

What is the minimum length of time that hands should be rubbed together with soap and water during routine handwashing?

  1. 5 seconds
  2. 2 minutes
  3. 20 seconds Correct answer.
  4. 10 minutes

Explanation

Routine handwashing should last at least 20 seconds of vigorous rubbing with soap and water, covering all surfaces of the hands and wrists. Shorter times do not give the soap enough contact time to lift and remove microorganisms effectively.

Question 32Personal Hygiene and Hand Hygiene

Which action is required before a food handler starts work each day?

  1. Covering hands with hand cream
  2. Wearing a wristwatch for timing tasks
  3. Trimming fingernails and removing nail polish Correct answer.
  4. Applying perfume to mask odours

Explanation

Food handlers must keep nails short, clean and free of polish or artificial nails because dirt and microorganisms collect under and around them. Perfume, jewellery and creams can contaminate food and are not permitted on exposed hands and arms.

Question 33Personal Hygiene and Hand Hygiene

A food handler sneezes into their hands while preparing sandwiches. What should they do immediately?

  1. Put on gloves over the contaminated hands
  2. Wash hands thoroughly with soap and water before resuming Correct answer.
  3. Wipe hands on their apron and continue
  4. Continue and wash hands at the end of the shift

Explanation

Sneezing into hands contaminates them with respiratory secretions, so hands must be washed immediately before any further food contact. Wiping on an apron or delaying washing spreads contamination to food and surfaces.

Question 34Personal Hygiene and Hand Hygiene

How should a food handler dry their hands after washing them?

  1. On a shared cloth towel
  2. With a single-use paper towel or hand dryer Correct answer.
  3. By shaking them in the air
  4. On their uniform trousers

Explanation

Hands should be dried with single-use paper towels or a hot-air dryer because shared cloths and clothing can re-contaminate clean hands. Air-shaking leaves hands wet and does not remove remaining moisture properly.

Question 35Personal Hygiene and Hand Hygiene

Which of the following is an appropriate item of protective clothing for a food handler?

  1. A clean, light-coloured overcoat or apron Correct answer.
  2. Open-toed sandals
  3. A wristwatch with a metal strap
  4. A sleeveless vest

Explanation

Clean, light-coloured outer clothing such as an overcoat or apron protects food from contamination and makes soiling visible. Jewellery, bare arms and open footwear increase the risk of contaminating food.

Question 36Personal Hygiene and Hand Hygiene

What is the purpose of covering a cut on a food handler's hand with a waterproof dressing?

  1. To prevent bacteria from the wound reaching food Correct answer.
  2. To hide the wound from customers
  3. To keep the wound clean only
  4. To allow the handler to skip handwashing

Explanation

A waterproof, brightly coloured dressing prevents wound bacteria from entering food and makes a lost dressing easy to spot. The dressing protects both the wound and the food but does not remove the need to wash hands.

Question 37Personal Hygiene and Hand Hygiene

A food handler is about to move from preparing raw chicken to preparing a ready-to-eat salad. What is the correct action?

  1. Wipe hands on a cloth used for the chicken
  2. Wash hands with soap and water and change gloves or utensils Correct answer.
  3. Rinse hands quickly under cold water
  4. Continue if the salad will be cooked later

Explanation

Moving from raw meat to ready-to-eat food requires thorough handwashing and changing gloves or utensils to prevent cross-contamination. A quick rinse or shared cloth does not remove bacteria such as Salmonella.

Question 38Personal Hygiene and Hand Hygiene

Which of the following is the correct sequence for effective handwashing?

  1. Rub hands, dry, rinse, apply soap
  2. Wet hands, apply soap, rub all surfaces, rinse, dry Correct answer.
  3. Rinse hands, dry, apply soap, rub
  4. Apply soap to dry hands, rinse, dry, rub

Explanation

Proper handwashing starts by wetting hands, applying soap, rubbing all surfaces including between fingers and under nails, then rinsing and drying. Soap works best when hands are already wet and the process ends with drying.

Question 39Personal Hygiene and Hand Hygiene

Why are artificial nails and nail polish prohibited for food handlers?

  1. They interfere with glove fit
  2. They are difficult to clean at home
  3. They can chip and hide dirt and bacteria Correct answer.
  4. They cause allergic reactions in customers

Explanation

Artificial nails and polish can chip into food and create crevices where dirt and bacteria accumulate, making hands harder to clean. They are therefore not permitted for food handlers.

Question 40Personal Hygiene and Hand Hygiene

A food handler with diarrhoea is scheduled to work in the kitchen. What is the correct action?

  1. Take medication and start work
  2. Report to the manager and stay away from food handling Correct answer.
  3. Wear double gloves and continue
  4. Work only with wrapped foods

Explanation

Diarrhoea may indicate a foodborne illness such as Salmonella or E. coli infection, so the handler must report it and be excluded from food handling. Self-medicating or using gloves does not remove the risk of transmitting pathogens.

Question 41Personal Hygiene and Hand Hygiene

Which of the following best describes the role of a fingernail brush in handwashing?

  1. It replaces the need for soap
  2. It should be used on the skin of the palms
  3. It is used only before handling raw meat
  4. It helps clean under and around nails where dirt collects Correct answer.

Explanation

A nail brush helps remove dirt and microorganisms from under and around the nails, an area often missed during handwashing. It is used in addition to soap and water, not instead of it.

Question 42Personal Hygiene and Hand Hygiene

Why should food handlers avoid wearing rings and bracelets while handling food?

  1. They may react with cleaning chemicals
  2. They are uncomfortable during long shifts
  3. They trap dirt and microorganisms and can fall into food Correct answer.
  4. They may scratch equipment

Explanation

Jewellery creates crevices that trap dirt and bacteria and can fall into food, so it must be removed before handling food. The concern is contamination rather than comfort or equipment damage.

Question 43Personal Hygiene and Hand Hygiene

A food handler is observed washing their hands but not drying them before handling ready-to-eat food. Why is this a problem?

  1. Wet hands transfer moisture and bacteria to food Correct answer.
  2. Wet hands cool the food too quickly
  3. Wet hands make gloves harder to put on
  4. Wet hands cause the handler to slip

Explanation

Wet hands can transfer moisture and remaining microorganisms to food and surfaces, and moisture supports bacterial growth. Drying is a required step in handwashing for this reason.

Question 44Personal Hygiene and Hand Hygiene

Which of these situations requires a food handler to wash their hands?

  1. After handling money or a mobile phone Correct answer.
  2. After looking at food
  3. After reading a menu
  4. After standing at a workstation

Explanation

Handling money, phones or other personal items contaminates hands, so washing is required before returning to food work. Passive activities such as reading or standing do not contaminate hands.

Question 45Personal Hygiene and Hand Hygiene

What is the main reason food handlers should keep their uniforms clean and changed regularly?

  1. To reduce the need for handwashing
  2. To prevent clothing from contaminating food Correct answer.
  3. To comply with laundry costs
  4. To look professional to customers

Explanation

Dirty clothing can carry dirt and microorganisms that contaminate food and surfaces, so uniforms must be clean and changed regularly. Appearance and cost are not the food safety rationale.

Question 46Personal Hygiene and Hand Hygiene

Which statement about the use of gloves by food handlers is correct?

  1. Gloves should be worn over dirty hands
  2. Gloves can be washed and reused
  3. Gloves must be changed between tasks and when torn Correct answer.
  4. Gloves remove the need to wash hands

Explanation

Gloves must be changed between different tasks, after contact with raw food, and whenever torn or soiled, because they can carry contamination just like bare hands. They do not replace handwashing.

Question 47Personal Hygiene and Hand Hygiene

A food handler has a small, uncovered sore on their hand and is about to prepare food. What is the most appropriate action?

  1. Cover the sore with a waterproof dressing and wash hands Correct answer.
  2. Wear a cloth bandage over the sore
  3. Ask a colleague to watch the sore
  4. Continue with the sore uncovered

Explanation

An uncovered sore can leak bacteria into food, so it must be covered with a waterproof dressing and hands washed before food work. Cloth bandages are not waterproof and uncovered sores are not acceptable.

Question 48Personal Hygiene and Hand Hygiene

A food handler is diagnosed with a foodborne illness such as typhoid. What is the expected course of action?

  1. Return to work wearing gloves at all times
  2. Return to work after one negative test only
  3. Stay away from food work until cleared by a medical professional Correct answer.
  4. Return to work once symptoms stop

Explanation

Handlers with certain foodborne illnesses must be excluded from food work until medically cleared, because they may shed pathogens even after symptoms resolve. Self-clearance or gloves do not make them safe.

Question 49Personal Hygiene and Hand Hygiene

A manager notices a food handler wearing a plaster on their finger without a detectable colour. Why is this a concern?

  1. It may fall into food and be hard to detect Correct answer.
  2. It may dissolve in water
  3. It may interfere with knife grip
  4. It may be uncomfortable

Explanation

Dressings on hands should be waterproof and brightly coloured so they can be seen if they fall into food. A non-detectable plaster poses a physical contamination risk.

Question 50Personal Hygiene and Hand Hygiene

Which of the following best explains why thorough handwashing is more effective than a quick rinse with water alone?

  1. Rinsing spreads bacteria evenly over the hands
  2. Water alone is too cold to kill bacteria
  3. Soap dissolves food residues into harmless sugars
  4. Soap helps lift and remove microorganisms so they can be rinsed away Correct answer.

Explanation

Soap helps lift oils, dirt and microorganisms from the skin so they can be rinsed away, whereas water alone does not remove them effectively. Neither soap nor water sterilises hands; the aim is physical removal.