Principles of environmental, personal, and food hygiene

Correct answer: B. To prevent infection

Hygiene in patient food preparation includes clean hands, safe water, clean utensils, proper cooking, protection from insects, and correct storage temperatures. These practices reduce contamination by harmful microorganisms and help prevent food-borne infection. Patients may already have reduced immunity, so option B is the only scientifically correct reason.

Correct answer: A. It helps reduce the risk of infection

Food hygiene includes safe selection, storage, preparation, cooking, serving, and handling of food. These practices reduce contamination by harmful microorganisms, chemicals, or foreign matter and are especially important for patients whose immunity may be weak. Hygiene supports a safe diet without being intended to remove nutrients or decorate food. Therefore, option A correctly states its main importance.

Correct answer: A. To prevent a harmful reaction caused by an allergenic food

Asking about food allergy is essential for patient safety. An allergenic food can cause symptoms such as itching, hives, swelling, vomiting, wheezing or, in severe cases, anaphylaxis. The diet planner can avoid the identified allergen and select nutritionally suitable alternatives. Allergy information does not automatically increase calorie needs, determine serving size or improve meal colour. Therefore, preventing a harmful reaction is the correct answer.

Correct answer: B. So that the patient can follow the plan

Food availability is considered so that the recommended diet can actually be purchased, prepared, and consumed by the patient. A plan based on locally available, seasonal, affordable, and culturally acceptable foods is more practical and improves adherence. Availability does not mean ignoring nutrient needs; rather, suitable available foods should be selected to meet those needs. Therefore, option B is correct because feasibility supports continued use of the diet.

Correct answer: B. To protect food from dust, insects, and microorganisms

Cooked food should be covered because exposure to air, dust, flies, cockroaches, and other insects can introduce harmful microorganisms. These microorganisms may multiply in suitable conditions and cause food spoilage or food-borne disease. Covering does not replace safe cooking, handwashing, or refrigeration, but it is an important protective measure that reduces the chance of contamination and keeps the food safer for consumption.

Correct answer: C. It may increase infection or illness

Contaminated food may contain disease-causing bacteria, viruses, parasites, or toxins. A patient may already have reduced immunity or a weakened body because of illness, surgery, or treatment. Eating such food can produce diarrhoea, vomiting, fever, dehydration, or a more serious infection and may delay recovery. Therefore, strict food hygiene is especially important when preparing and serving food to patients.

Correct answer: A. It helps prevent water-borne infections and ensures safe fluid intake

Safe water is important in a patient’s diet because contaminated water can transmit organisms that cause diarrhoea, vomiting, intestinal infections, and other illness. Patients may be especially vulnerable because of reduced immunity or poor health. Clean, treated water supports safe hydration, but it does not replace prescribed medicines or guarantee prevention of every disease. Hence, option A is correct.

Correct answer: C. Keeping cooked food uncovered in dust.

Option C is correct because leaving cooked food uncovered in dust exposes it to dirt, microorganisms, insects, and other contaminants. Food safety requires protection from contamination during preparation, storage, and serving. Washing hands, separating raw and cooked foods, and using clean utensils are preventive practices that reduce the risk of foodborne illness.

Correct answer: D. Leaving cooked food uncovered in a dusty place

Leaving cooked food uncovered in dust exposes it to microorganisms, insects and physical contaminants. Cooked food is often ready to eat, so it may receive no further heating to destroy contamination. Safe practice includes covering food, protecting it from dust and pests, using clean utensils and maintaining appropriate storage temperature and time.

Correct answer: C. To help prevent food-borne infection

Hygienic food is prepared, handled, stored and served in ways that reduce contamination by harmful microorganisms, chemicals or foreign materials. Safe water, clean hands and utensils, proper cooking and suitable storage help prevent food-borne illness. Thus, the best answer is option C, although hygiene also supports general food quality.

Correct answer: B. To protect from contamination

Covering food is an important food-hygiene practice. It helps prevent dust, insects, droplets, and some disease-causing microorganisms from reaching the food. Protection is especially important after cooking, when food may be ready to eat and can become contaminated through handling or exposure. Covering does not increase energy, remove fat, or change the basic taste of the food, so contamination prevention is the correct answer.

Correct answer: A. To prevent infection and contamination

Hands can carry dirt, harmful microorganisms, and contaminants from the toilet, face, raw foods, surfaces, or other objects. Washing them properly with soap and clean water before food preparation reduces the transfer of these hazards to ingredients, utensils, and cooked food. This protects the food from contamination and helps prevent food-borne infection. Hand washing does not alter sweetness, cost, or written records.

Correct answer: A. The risk of contamination may increase

Uncovered food can be exposed to dust, insects, dirty droplets and microorganisms such as bacteria. These contaminants may enter the food and cause spoilage or food-borne illness, especially when the food is moist or kept warm. Covering food, using clean utensils and maintaining proper storage temperature are simple food-hygiene measures that reduce this risk.

Correct answer: C. Washing hands before preparing food

Washing hands with soap and safe water before preparing or serving food removes dirt and reduces the transfer of harmful microorganisms. Hands should also be washed after using the toilet, handling raw food, touching waste or coughing. This simple practice helps prevent cross-contamination and food-borne illness. The other choices increase contamination, so option C is correct.

Correct answer: D. To prevent contamination by dust, insects and microorganisms

Keeping food covered creates a physical barrier against dust, flies, insects and droplets that may carry harmful microorganisms. It lowers the chance that food will become contaminated during preparation, cooling or storage, although proper temperature control and clean utensils are also necessary. Covering does not increase sweetness, calories or price. Therefore, option D is correct.

Correct answer: D. Keeping food safe and free from contamination

Food hygiene includes the clean handling, preparation, storage, and serving of food. Its main purpose is to prevent contamination by harmful microorganisms, chemicals, or foreign materials and thereby reduce food-borne illness. It is not concerned with making food expensive, hiding it, or always frying it. Therefore, option D correctly describes food hygiene.

Correct answer: A. Food hygiene

Washing hands before preparing food is a basic personal-hygiene practice that supports food hygiene. Clean hands reduce the transfer of bacteria, viruses, and other contaminants to ingredients, utensils, and cooked food. This helps protect consumers from food-borne infections. Therefore, option A is correct; the other options are unrelated to the safe preparation of food.

Correct answer: B. Because it helps control harmful microorganisms and improves food safety

Temperature control is an important part of food safety. Adequate cooking can destroy many harmful microorganisms, while safe hot holding, rapid cooling, and refrigeration slow their multiplication. Incorrect temperatures may allow bacteria to grow and produce a food-borne hazard. Colour, weight, or nutrient increase does not reliably indicate safety, so option B is correct.

Correct answer: D. The food may become contaminated

Food left uncovered can be exposed to dust, insects, dirty surfaces, droplets, and microorganisms. These contaminants may make the food unsafe and can cause spoilage or food-borne illness, especially when the food is moist and kept at an unsuitable temperature. Covering food, using clean utensils, washing hands, and storing food safely are important practices of food hygiene. Therefore, contamination is the correct answer.

Correct answer: A. To prevent contamination and infection

Clean hands and utensils reduce the transfer of harmful microorganisms, dirt, and other contaminants into food. This helps prevent foodborne infections and protects the health of people who eat the meal. Washing hands, cleaning equipment, and using safe preparation practices are essential parts of personal and food hygiene, so option A is correct.

Correct answer: A. Food safety

Maintaining safe temperatures is an important food-safety practice. If perishable food remains too warm for too long, bacteria can multiply rapidly; if it is not cooled or reheated properly, the risk of spoilage and foodborne illness increases. Therefore, temperature control protects food quality and consumers, making option A correct.

Correct answer: A. It helps supply vitamins, minerals, and fibre

Fruits and vegetables contribute vitamins, minerals, dietary fibre, water, and many beneficial plant compounds. Fibre supports bowel function and can help with satiety, while micronutrients support normal body processes. They are important protective foods within a varied balanced diet, although they do not replace every other food group. Thus, option A is correct.

Correct answer: B. Because clean water can reduce food contamination

Water used for washing ingredients, preparing food, making ice or cleaning utensils can come into direct contact with food. If that water contains pathogens or harmful chemicals, it may contaminate the food and cause illness. Using safe, clean water reduces this route of contamination, although handwashing, proper cooking, storage and utensil hygiene are also necessary. Thus, option B is correct because clean water supports food safety rather than adding colour, protein or calories.

Correct answer: A. Cross-contamination

Raw foods, especially raw meat, poultry, eggs, and seafood, may carry harmful microorganisms. If they touch cooked food, utensils, hands, or surfaces, those microorganisms can transfer to food that will not receive further cooking. Separating them prevents cross-contamination and reduces food-borne illness risk, so A is correct.

Correct answer: A. To prevent microorganisms from transferring to cooked food

Raw meat, poultry, eggs, seafood, and unwashed produce may carry disease-causing microorganisms. If they contact cooked or ready-to-eat food, microbes can transfer through hands, knives, cutting boards, containers, or leaking juices; this is cross-contamination. Cooking may destroy many organisms, but a cooked food can become contaminated again after cooking. Therefore raw and cooked foods must be separated during storage and preparation.