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Assam HS Skill Food Processing study materials
Assam HS Skill Food Processing study resources

Assam HS Skill Food Processing practice questions

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Question 1Introduction to Food Processing and Preservation

In food processing terminology, which of the following best describes 'processing' as distinct from 'preservation'?

  1. Transporting fresh produce from farm to market in refrigerated trucks
  2. Converting raw agricultural produce into a stable, edible, or more usable form through physical, chemical, or biological operations Correct answer.
  3. Applying heat treatment solely to destroy all microorganisms in a product
  4. Storing harvested grain in a sealed silo at ambient temperature without any treatment

Explanation

Processing refers to the set of unit operations that transform raw agricultural material into a more usable, edible, or value-added form, such as milling, extraction, or fermentation. Preservation is a subset of processing concerned mainly with extending shelf life. The two overlap but are not identical concepts.

Question 2Introduction to Food Processing and Preservation

Which primary reason explains why fresh fruits and vegetables spoil faster than dry cereal grains?

  1. They have a lower pH than cereal grains and therefore support more bacteria
  2. They are always harvested with mechanical damage that introduces pathogens
  3. They contain much higher moisture content that supports microbial growth and enzymatic reactions Correct answer.
  4. They contain no natural enzymes and so cannot undergo autolysis

Explanation

High water activity in fresh produce supports rapid microbial proliferation and mobilises enzymes and chemical reactions. Dry grains have low water activity, which suppresses most spoilage organisms. Moisture, not mechanical damage or pH alone, is the dominant factor here.

Question 3Introduction to Food Processing and Preservation

A food technologist wants to reduce water activity without removing water by evaporation. Which approach is most appropriate?

  1. Freezing the product to below -20 degrees Celsius
  2. Increasing the relative humidity of the storage room
  3. Packing the product in a nitrogen-flushed pouch
  4. Adding solutes such as sugar or salt to bind free water Correct answer.

Explanation

Water activity measures the availability of free water, and dissolving solutes like sugar or salt binds water molecules, lowering water activity even when total moisture stays the same. This is the principle behind jams, jellies, and cured meats. Removing water is not required to lower water activity.

Question 4Introduction to Food Processing and Preservation

Which statement correctly distinguishes sterilisation from pasteurisation?

  1. Pasteurisation destroys all spores, while sterilisation destroys only vegetative cells
  2. Pasteurisation is used only for solid foods while sterilisation is used only for liquids
  3. Sterilisation is always carried out at lower temperatures than pasteurisation
  4. Sterilisation aims to destroy all viable microorganisms including spores, while pasteurisation destroys vegetative pathogens only Correct answer.

Explanation

Sterilisation uses sufficient heat to inactivate all viable microorganisms and their spores, giving a commercially sterile product. Pasteurisation uses milder heat to destroy vegetative pathogens and reduce spoilage flora, but spores survive. This is why pasteurised products still require refrigeration.

Question 5Introduction to Food Processing and Preservation

A small pickle unit in Assam wants to preserve cucumbers by lactic acid fermentation. Which condition most directly favours the desired fermentation?

  1. Adding sodium benzoate at the start of fermentation
  2. Aerating the brine vigorously throughout fermentation
  3. Holding the brine at 60 degrees Celsius for the entire fermentation
  4. Adding 2 to 5 percent salt to brine and maintaining anaerobic conditions Correct answer.

Explanation

Lactic acid bacteria are salt-tolerant and anaerobic, so a moderate brine concentration plus exclusion of air lets them dominate and produce lactic acid that lowers pH. Aeration would favour aerobic spoilage organisms such as moulds. Preservatives and high heat would inhibit the starter flora.

Question 6Introduction to Food Processing and Preservation

Which of the following is the principal purpose of blanching vegetables before freezing?

  1. To inactivate enzymes that cause off-flavours and colour changes during frozen storage Correct answer.
  2. To increase the water content of the tissue
  3. To sterilise the product so it becomes shelf-stable at room temperature
  4. To add a protective sugar coating to the surface

Explanation

Blanching uses brief hot-water or steam treatment to denature enzymes such as peroxidase and polyphenol oxidase. Without it, these enzymes remain active in frozen storage and cause toughening, off-flavours, and colour loss. Blanching does not sterilise the product.

Question 7Introduction to Food Processing and Preservation

In sun drying of fish, which factor most limits the rate of moisture removal on a humid, cloudy day?

  1. The small surface area to volume ratio of the fish
  2. Excessively high salt content in the fish tissue
  3. Presence of natural antioxidants in fish oil
  4. Low vapour pressure gradient between the fish surface and the surrounding air Correct answer.

Explanation

Drying rate depends on the difference in water vapour pressure between the product surface and the air. On a humid day the air is already near saturation, so the gradient is small and evaporation slows. Cloud cover also reduces the solar energy input.

Question 8Introduction to Food Processing and Preservation

Which packaging material is most suitable for a retort pouch intended for thermal sterilisation of a ready-to-eat curry?

  1. Uncoated cellophane film
  2. Single-layer low-density polyethylene film
  3. Wax-coated paper
  4. A laminate of polyester, aluminium foil, and cast polypropylene Correct answer.

Explanation

Retort pouches need a heat-resistant outer layer, a barrier layer to exclude oxygen and moisture, and a heat-sealable food-contact layer. The polyester, aluminium foil, and cast polypropylene laminate provides all three and withstands retort temperatures above 120 degrees Celsius.

Question 9Introduction to Food Processing and Preservation

Which of the following is an example of a chemical preservation method that works primarily by lowering pH?

  1. Irradiation with gamma rays
  2. Addition of acetic acid during pickling Correct answer.
  3. Vacuum packaging of dried fruit
  4. Refrigeration at 4 degrees Celsius

Explanation

Acetic acid from vinegar lowers the pH of the product, and most spoilage bacteria cannot grow below about pH 4.6. This is the basis of pickling. The other options rely on oxygen exclusion, ionising radiation, or low temperature rather than acidification.

Question 10Introduction to Food Processing and Preservation

During the constant-rate drying period of a food material, what primarily controls the rate of moisture loss?

  1. The internal diffusion of water through the solid matrix
  2. The concentration of solutes in the food
  3. The initial moisture content of the food
  4. External conditions such as air temperature, humidity, and velocity Correct answer.

Explanation

In the constant-rate period the surface remains saturated with free water, so evaporation behaves like drying of a free water surface. External air conditions, not internal resistance, govern the rate. Internal diffusion becomes controlling only in the falling-rate period.

Question 11Introduction to Food Processing and Preservation

Which of the following best explains why high-pressure processing is described as a non-thermal preservation technique?

  1. It relies on heating the product to 121 degrees Celsius under pressure
  2. It removes all water from the food by mechanical compression
  3. It inactivates microorganisms using pressures around 400 to 600 MPa at chilled or ambient temperature Correct answer.
  4. It uses ultraviolet light generated by the pressure vessel

Explanation

High-pressure processing applies hydrostatic pressure in the range of several hundred megapascals to disrupt microbial cells and some enzymes while the product stays near chilled or ambient temperature. This preserves fresh-like sensory qualities better than heat. It is not a high-temperature process.

Question 12Introduction to Food Processing and Preservation

A processor wants to extend the shelf life of bottled mango juice while retaining fresh flavour. Which combination is most appropriate?

  1. Adding water to dilute the juice before sealing
  2. Storing the sealed bottles in direct sunlight
  3. Boiling the juice for 30 minutes in an open pan
  4. Flash pasteurisation followed by hot-fill into sterilised bottles and immediate cooling Correct answer.

Explanation

Flash pasteurisation uses a short, high-temperature treatment that reduces the thermal load on flavour compounds while destroying vegetative pathogens and spoilage organisms. Hot filling into sterilised bottles maintains commercial sterility during sealing. Prolonged boiling and sunlight exposure both degrade quality.

Question 13Introduction to Food Processing and Preservation

Which of the following correctly defines 'commercial sterility' for a canned food?

  1. The product is free of viable microorganisms capable of growing under normal storage conditions, though heat-resistant spores may survive Correct answer.
  2. The product has been heated to 100 degrees Celsius for exactly one minute
  3. The product contains absolutely no microbial cells of any kind
  4. The product has been treated with chemical preservatives instead of heat

Explanation

Commercial sterility means the product is free of microorganisms that could grow and spoil it or cause illness under normal non-refrigerated storage. Thermostable spores may remain but cannot germinate in the product's conditions. This is distinct from absolute sterility.

Question 14Introduction to Food Processing and Preservation

Which statement best explains the preservative action of a high sugar concentration in jam?

  1. Sugar raises the pH of the product to alkaline levels
  2. Sugar acts as a nutrient that encourages beneficial bacteria to outcompete spoilage organisms
  3. Sugar forms a physical barrier that prevents air from entering the jar
  4. Sugar lowers water activity so that most bacteria and moulds cannot grow Correct answer.

Explanation

A high concentration of sugar binds free water, reducing water activity to levels at which most spoilage bacteria and moulds cannot multiply. This is why jams and jellies keep without refrigeration once opened only briefly. The effect depends on sufficient soluble solids, typically above 65 degrees Brix.

Question 15Introduction to Food Processing and Preservation

In the context of food spoilage, what is autolysis?

  1. Bacterial breakdown of proteins into amines
  2. Absorption of moisture from the surrounding air
  3. Oxidation of fats producing rancid odours
  4. Self-digestion of tissue by the food's own enzymes after harvest or slaughter Correct answer.

Explanation

Autolysis is the enzymatic self-degradation of food tissue, for example proteases tenderising fish muscle after death or pectinases softening overripe fruit. It occurs without microorganisms and often precedes microbial spoilage. Rancidity and moisture uptake are separate deterioration mechanisms.

Question 16Introduction to Food Processing and Preservation

Which of the following is the most likely consequence of inadequate blanching before freezing green peas?

  1. Improved texture through continued enzyme action
  2. Complete sterilisation of the product making refrigeration unnecessary
  3. Development of off-flavours and colour loss due to residual enzyme activity Correct answer.
  4. Increased vitamin C retention during frozen storage

Explanation

Residual peroxidase and lipoxygenase activity during frozen storage produces off-flavours, colour deterioration, and toughening. Adequate blanching denatures these enzymes before freezing. Inadequate blanching therefore leads to quality loss, not improvement.

Question 17Introduction to Food Processing and Preservation

Which of the following is a key advantage of freeze drying over conventional hot-air drying?

  1. The porous structure and original shape are largely retained because water sublimes from ice Correct answer.
  2. It requires no packaging because the product is sterile
  3. It is a faster and cheaper process for most products
  4. It produces a product with higher moisture content

Explanation

In freeze drying, water is frozen and then removed by sublimation under vacuum, so the product retains its shape, porosity, and much of its flavour. Rehydration is rapid. The trade-off is high capital and energy cost.

Question 18Introduction to Food Processing and Preservation

Which of the following best describes the role of a starter culture in fermented foods such as curd?

  1. It acts as a chemical preservative that remains inert during storage
  2. It sterilises the milk by killing all existing bacteria
  3. It provides a controlled population of desirable microorganisms that outcompete spoilage flora and produce acid Correct answer.
  4. It adds artificial colour and flavour compounds to the product

Explanation

A starter culture introduces a known, well-adapted population of lactic acid bacteria that rapidly produces acid, lowering pH and suppressing undesirable organisms. This gives consistent fermentation and product safety. The culture is living and metabolically active, not inert.

Question 19Introduction to Food Processing and Preservation

A canning plant records a process deviation where the retort temperature fell below the scheduled value for part of the cycle. What is the most appropriate corrective action?

  1. Release the batch immediately because the deviation was brief
  2. Hold the batch and evaluate the accumulated lethality before deciding on reprocessing or rejection Correct answer.
  3. Lower the scheduled process temperature for future batches
  4. Increase the salt content of the product to compensate

Explanation

Scheduled processes are based on a required accumulated lethality, usually expressed as F0, so any deviation must be assessed against the achieved value. If lethality is inadequate the batch may be reprocessed or rejected. Immediate release would risk distributing under-processed low-acid canned food.

Question 20Introduction to Food Processing and Preservation

Which of the following is the primary mechanism by which modified atmosphere packaging extends the shelf life of fresh produce?

  1. Freezing the produce inside the package
  2. Adding moisture to maintain turgor
  3. Sterilising the produce with gamma radiation before sealing
  4. Reducing oxygen and raising carbon dioxide to slow respiration and microbial growth Correct answer.

Explanation

Modified atmosphere packaging adjusts the gas composition around the product, typically lowering oxygen and elevating carbon dioxide. This slows respiration, ethylene action, and aerobic microbial growth. The produce remains fresh and respiring, not frozen or sterile.

Question 21Introduction to Food Processing and Preservation

Which of the following best explains why dried foods must be packaged in moisture-barrier material?

  1. They require oxygen to maintain their flavour
  2. They lose colour when exposed to nitrogen
  3. They are hygroscopic and will absorb moisture, raising water activity and permitting spoilage Correct answer.
  4. They generate carbon dioxide that must be contained

Explanation

Dried foods have low water activity, which is the basis of their shelf stability. If they absorb moisture from humid air, water activity rises and moulds and other organisms can grow. A moisture-barrier package prevents this rehydration.

Question 22Introduction to Food Processing and Preservation

Which statement correctly compares the effect of refrigeration and freezing on microbial activity?

  1. Refrigeration slows microbial growth, while freezing stops growth but may not kill all microorganisms Correct answer.
  2. Both processes kill all microorganisms present
  3. Freezing sterilises the food, while refrigeration only slows spoilage
  4. Refrigeration kills bacteria, while freezing only slows their growth

Explanation

Refrigeration at around 0 to 5 degrees Celsius slows but does not stop microbial growth. Freezing halts growth and metabolism, but many bacteria and spores survive and can resume growth on thawing. Neither process sterilises food.

Question 23Introduction to Food Processing and Preservation

A food scientist observes that a dried product stored in a humid room develops mould despite its low initial moisture. Which explanation is most consistent with drying theory?

  1. The mould grew without any water because it uses only oxygen
  2. The product's enzymes spontaneously generated water
  3. The product absorbed moisture and its surface water activity rose above the growth threshold for moulds Correct answer.
  4. The initial drying process created permanent sterility that later failed

Explanation

Dried foods are hygroscopic and equilibrate with ambient humidity. In a humid room the surface can absorb enough moisture to raise water activity above the threshold for mould growth, typically around 0.70 to 0.80. This is why moisture-barrier packaging and dry storage are essential.

Question 24Introduction to Food Processing and Preservation

Which of the following is the most appropriate method to control enzymatic browning in cut apples during minimal processing?

  1. Dipping in a dilute ascorbic acid or citric acid solution Correct answer.
  2. Warming the cut pieces to 60 degrees Celsius for one hour
  3. Increasing exposure to air before packaging
  4. Adding sodium chloride at high concentration to the surface

Explanation

Enzymatic browning is caused by polyphenol oxidase acting on phenolic substrates in the presence of oxygen. Ascorbic acid reduces the quinone intermediates back to colourless compounds, and citric acid lowers pH and chelates copper at the enzyme active site. Both approaches slow browning effectively.

Question 25Food Safety, Hygiene and Sanitation (HACCP, GMP)

Under the HACCP system, which of the following is defined as a biological, chemical or physical agent in food that is reasonably likely to cause illness or injury if not controlled?

  1. A prerequisite programme
  2. A food safety hazard Correct answer.
  3. A verification activity
  4. A critical limit

Explanation

A hazard is any biological, chemical or physical agent with the potential to cause an adverse health effect. Critical limits are the measurable boundaries used to control a hazard at a CCP, while verification and prerequisite programmes are separate HACCP elements.

Question 26Food Safety, Hygiene and Sanitation (HACCP, GMP)

In the seven principles of HACCP, what is the immediate next step after a Critical Control Point (CCP) has been identified for a significant hazard?

  1. Establish critical limits for each CCP Correct answer.
  2. Establish verification procedures
  3. Establish corrective actions
  4. Establish documentation and record keeping

Explanation

HACCP Principle 3 requires critical limits to be set for each CCP so that the process can be kept within safe boundaries. Corrective actions, verification and record keeping are Principles 5, 6 and 7 and come later in the sequence.

Question 27Food Safety, Hygiene and Sanitation (HACCP, GMP)

A ready-to-eat cooked food is held in a hot-holding cabinet. Which value is most appropriate to record as the critical limit for the CCP controlling bacterial growth?

  1. A core temperature of at least 60 degrees Celsius maintained throughout holding Correct answer.
  2. A holding time of no more than 12 hours at any temperature
  3. A relative humidity above 40 percent in the cabinet
  4. A cabinet air temperature of at least 35 degrees Celsius

Explanation

Hot holding prevents growth of vegetative pathogens when the food core stays at 60 degrees Celsius or above, so temperature and time are the measurable limits. Humidity and low air temperature do not control microbial growth in the food itself.

Question 28Food Safety, Hygiene and Sanitation (HACCP, GMP)

During verification of a HACCP plan, a food safety team finds that the metal detector on a packaged-snack line rejects only 8 of 10 test pieces. What is the most appropriate classification of this finding?

  1. A deviation requiring a corrective action record for that day's production
  2. A non-conformity in a verification activity requiring equipment adjustment and re-validation Correct answer.
  3. A critical limit that should be relaxed to match detector performance
  4. A monitoring record that can be filed without further action

Explanation

Challenging the detector with test pieces is a verification activity, and failure to reject all pieces shows the control is not effective. The equipment must be adjusted and its performance re-validated before production relies on it.

Question 29Food Safety, Hygiene and Sanitation (HACCP, GMP)

Which practice best reflects the Good Manufacturing Practice requirement for separation of operations to prevent cross-contamination in a small food unit?

  1. Locating raw-material handling and cooked-food handling in physically distinct areas or at separate times Correct answer.
  2. Using the same preparation table for raw meat and cooked foods after a quick wipe
  3. Allowing staff to move freely between the raw and cooked sections without changing aprons
  4. Storing cleaning chemicals in the dry-store rack beside packaged spices

Explanation

GMP requires separation of raw and ready-to-eat operations, either by physical barriers or by time separation with full cleaning between activities. This prevents pathogens from raw materials reaching cooked foods.

Question 30Food Safety, Hygiene and Sanitation (HACCP, GMP)

A worker in a spice-packing hall develops a septic cut on the hand. According to standard food hygiene rules, what is the correct immediate action?

  1. Continue packing but wear a single cloth glove over the cut
  2. Wash the hand with water only and resume work at the same station
  3. Apply a medicated cream and continue work without a dressing
  4. Cover the cut with a waterproof coloured dressing and move the worker to duties with no food contact Correct answer.

Explanation

Open wounds can shed pathogens such as Staphylococcus aureus, so they must be covered with a detectable waterproof dressing and the worker excluded from direct food contact. Cloth gloves and uncovered wounds do not provide a barrier.

Question 31Food Safety, Hygiene and Sanitation (HACCP, GMP)

Which statement correctly describes the role of a prerequisite programme in relation to HACCP?

  1. It is a voluntary marketing claim with no food safety function
  2. It provides the basic hygiene and environmental conditions on which the HACCP plan is built Correct answer.
  3. It is applied only after a critical limit has been exceeded
  4. It replaces the need to identify CCPs in a food process

Explanation

Prerequisite programmes such as pest control, cleaning, water quality and personal hygiene create the foundation that supports the HACCP system. They do not replace hazard analysis or CCP determination.

Question 32Food Safety, Hygiene and Sanitation (HACCP, GMP)

In a HACCP study, a hazard analysis shows that a step has no control measure available and the hazard is significant. What does correct HACCP logic require?

  1. Ignore the hazard because no CCP can be assigned
  2. Redesign the process or product so that a control measure can be introduced Correct answer.
  3. Record the hazard as a CCP with an arbitrary limit
  4. Move the hazard to the prerequisite programme list without justification

Explanation

If a significant hazard cannot be controlled at any step, the process or product must be modified to introduce a control measure. Assigning an arbitrary limit or ignoring the hazard defeats the purpose of hazard analysis.

Question 33Food Safety, Hygiene and Sanitation (HACCP, GMP)

Which of the following is the best example of a monitoring procedure at a pasteurisation CCP for liquid egg?

  1. Annual review of the HACCP plan by the food safety team
  2. Continuous recording of holding temperature and flow diversion status Correct answer.
  3. Consumer complaint trend analysis after product release
  4. Microbiological testing of finished product once per quarter

Explanation

Monitoring is a planned sequence of observations or measurements that shows whether a CCP is under control, such as continuous temperature and flow records. Annual review and complaint analysis are verification activities, and finished-product testing is too slow to control the process.

Question 34Food Safety, Hygiene and Sanitation (HACCP, GMP)

A batch of cooked rice is found at 28 degrees Celsius during hot holding, below the critical limit. Which action set best matches a properly written corrective action?

  1. Record the temperature in the log and continue holding until the next check
  2. Sell the product quickly before it cools further
  3. Lower the critical limit to 28 degrees Celsius for future batches
  4. Discard or reheat the product to a validated temperature, investigate the cause, and record the deviation and disposition Correct answer.

Explanation

A corrective action must deal with the affected product and the cause, then be documented. Reheating or discarding according to a validated decision, investigating the root cause and recording the outcome satisfies this requirement.

Question 35Food Safety, Hygiene and Sanitation (HACCP, GMP)

Which cleaning sequence is most appropriate for a food-contact surface in a wet-processing area?

  1. Apply sanitiser first, then detergent, then leave to air dry without rinsing
  2. Rinse with water, apply detergent, scrub, rinse, then apply a food-grade sanitiser at the specified concentration Correct answer.
  3. Wipe with a dry cloth and store the equipment without further treatment
  4. Dry-brush, then apply sanitiser, then rinse with cold water

Explanation

Effective wet cleaning removes soil with detergent before sanitising, because sanitisers are less effective when organic matter is present. The final sanitiser must be used at its specified concentration and contact time.

Question 36Food Safety, Hygiene and Sanitation (HACCP, GMP)

Which set of records is most directly required to demonstrate that a HACCP plan is being implemented as written?

  1. Customer feedback forms collected at the retail counter
  2. CCP monitoring records, corrective action records and verification records Correct answer.
  3. Staff salary sheets and leave registers
  4. Supplier invoices for packaging film

Explanation

HACCP Principle 7 requires documentation of monitoring, deviations and corrective actions, and verification activities. These records show that the plan is operating and allow traceability of control.

Question 37Food Safety, Hygiene and Sanitation (HACCP, GMP)

A food handler is diagnosed with typhoid fever and works in a ready-to-eat food unit. What is the correct public health response under food hygiene requirements?

  1. Allow work only in the raw-material store for the duration of illness
  2. Exclude the worker from food handling until medical clearance is given Correct answer.
  3. Allow work if the worker wears two pairs of gloves
  4. Transfer the worker to serving customers at the counter

Explanation

Typhoid fever is a notifiable enteric infection that can be shed in faeces and spread to food, so the worker must be excluded from food handling until medically cleared. Gloves and relocation within the premises do not remove the risk.

Question 38Food Safety, Hygiene and Sanitation (HACCP, GMP)

Which control measure is specifically directed at preventing the formation of the toxin of Clostridium botulinum in a vacuum-packed low-acid food?

  1. Increasing the water activity to above 0.99
  2. Storing the product in bright light to inhibit bacterial growth
  3. Adding more oxygen to the package headspace
  4. Maintaining the product at refrigeration temperatures below 3.3 degrees Celsius or applying a validated thermal process Correct answer.

Explanation

Clostridium botulinum spores can germinate in anaerobic low-acid foods and produce a lethal neurotoxin, so chilled storage or a validated botulinum cook is required. Light and added oxygen do not reliably prevent toxin formation, and high water activity favours growth.

Question 39Food Safety, Hygiene and Sanitation (HACCP, GMP)

What is the primary purpose of a supplier approval programme within food safety management?

  1. To reduce the purchase price of raw materials
  2. To verify that incoming materials and ingredients are safe and meet agreed specifications Correct answer.
  3. To shift legal responsibility for food safety to the supplier
  4. To replace the need for incoming goods inspection

Explanation

Supplier approval checks that raw materials and ingredients are produced under acceptable controls and meet agreed safety specifications. It supports, but does not replace, the receiving checks carried out by the food business.

Question 40Food Safety, Hygiene and Sanitation (HACCP, GMP)

Which of the following best describes the difference between cleaning and disinfection in food premises?

  1. Cleaning and disinfection are identical processes with different names
  2. Cleaning kills microorganisms while disinfection removes visible soil
  3. Disinfection is only needed in dry storage areas
  4. Cleaning removes soil and residues while disinfection reduces microorganisms to a safe level Correct answer.

Explanation

Cleaning physically removes food residues, grease and dirt, whereas disinfection reduces the number of microorganisms to a level that does not compromise food safety. Both are needed because disinfectants work poorly on soiled surfaces.

Question 41Food Safety, Hygiene and Sanitation (HACCP, GMP)

A small pickle unit uses borewell water for washing vegetables and for making brine. Which verification result should trigger immediate action?

  1. The water storage tank is painted blue
  2. The water pump was serviced last month
  3. The water is clear and odourless to the supervisor
  4. Coliform bacteria are detected in the water used for brine preparation Correct answer.

Explanation

Water that contacts food must be potable, and detection of coliform bacteria indicates possible faecal contamination and a risk of pathogens. Clear appearance and odour are not proof of microbiological safety.

Question 42Food Safety, Hygiene and Sanitation (HACCP, GMP)

Which statement about the validation of a critical limit is correct?

  1. Validation can be replaced by a supervisor's verbal assurance
  2. Validation is the routine daily check that the limit is being met
  3. Validation is performed only by the equipment supplier
  4. Validation provides scientific evidence that the limit, when met, will control the identified hazard Correct answer.

Explanation

Validation establishes, using scientific evidence or challenge studies, that the chosen critical limit actually controls the hazard. Routine checks that the limit is met are monitoring, not validation.

Question 43Food Safety, Hygiene and Sanitation (HACCP, GMP)

During an internal audit, a team finds that a CCP monitoring record for three days is signed but contains identical temperatures copied from the previous week. What is the most likely food safety implication?

  1. Identical temperatures prove that the process is stable
  2. The records can be deleted to avoid confusion
  3. The record is acceptable because it is signed by the operator
  4. The monitoring may be falsified, so CCP control is unverified and the cause must be investigated Correct answer.

Explanation

Copied or fabricated records mean there is no reliable evidence that the CCP was under control, which is a serious verification failure. The cause must be investigated and the affected product assessed.

Question 44Food Safety, Hygiene and Sanitation (HACCP, GMP)

Which of the following is a physical hazard most relevant to a spice-grinding operation?

  1. Cleaning chemical residue left in a mixing bowl
  2. Salmonella present on raw black pepper
  3. Metal fragments worn from a worn grinding plate Correct answer.
  4. Aflatoxin produced by mould growth on chillies

Explanation

Physical hazards are hard or sharp foreign objects such as metal, glass or stones, and worn grinder plates can shed metal into the product. Aflatoxin and Salmonella are biological hazards, and chemical residue is a chemical hazard.

Question 45Food Safety, Hygiene and Sanitation (HACCP, GMP)

A HACCP team is deciding whether a chilli-drying step is a CCP. Which finding would most strongly support classifying it as a CCP?

  1. The step is the only control measure that can reduce mould growth to an acceptable level Correct answer.
  2. The step is already listed in the equipment manual
  3. The step is expensive and time-consuming for the unit
  4. The step is popular with customers for flavour reasons

Explanation

A step is a CCP when it applies the last or only control measure for a significant hazard and loss of control would lead to an unacceptable risk. Cost, flavour and equipment manuals are irrelevant to this determination.

Question 46Food Safety, Hygiene and Sanitation (HACCP, GMP)

Which personal hygiene practice is required before a food handler enters a high-risk ready-to-eat preparation area?

  1. Wearing jewellery to keep sleeves in place
  2. Changing into clean protective clothing and washing hands thoroughly Correct answer.
  3. Using the same apron worn in the raw meat area earlier
  4. Carrying a personal mobile phone in the pocket for quick calls

Explanation

Hands and clothing are major routes of contamination, so clean protective clothing and proper hand washing are mandatory before entering high-risk areas. Jewellery, phones and contaminated aprons are all sources of contamination.

Question 47Food Safety, Hygiene and Sanitation (HACCP, GMP)

A pest control programme in a food processing unit finds rodent droppings in the dry ingredient store. Which response best reflects integrated pest management under GMP?

  1. Spray insecticide directly on the ingredient bags
  2. Remove and assess affected materials, seal entry points, and increase monitoring and proofing Correct answer.
  3. Place bait stations inside open ingredient bins to kill rodents quickly
  4. Ignore the finding because droppings were not found in the finished product

Explanation

Integrated pest management focuses on exclusion, sanitation and monitoring rather than relying on chemicals near food. Affected material must be assessed and entry points sealed to prevent recurrence.

Question 48Food Safety, Hygiene and Sanitation (HACCP, GMP)

Which statement best explains why allergen cross-contact control is treated as a food safety issue in a unit producing both milk-based and milk-free snacks?

  1. Even small amounts of an allergen can cause a severe reaction in sensitised consumers Correct answer.
  2. Allergens are only a quality concern and do not affect health
  3. Allergens are destroyed by normal cooking temperatures
  4. Allergen labelling is optional for small producers

Explanation

Food allergens can trigger severe, sometimes life-threatening reactions in sensitised individuals at very low doses, so cross-contact must be prevented and labelling must be accurate. Cooking does not reliably destroy allergen proteins.

Question 49Food Chemistry and Nutrition

Which nutrient is the primary source of energy for the human body and is the main component of cereals like rice and wheat?

  1. Carbohydrates Correct answer.
  2. Vitamins
  3. Proteins
  4. Minerals

Explanation

Carbohydrates are the body's main energy source, and cereals such as rice and wheat are predominantly composed of starch, a complex carbohydrate. Proteins are mainly for growth and repair, while vitamins and minerals are micronutrients needed in small amounts.

Question 50Food Chemistry and Nutrition

In food processing, which property of water is most directly responsible for its ability to dissolve sugars, salts, and many food acids?

  1. High surface tension
  2. Low viscosity
  3. High specific heat
  4. Polarity Correct answer.

Explanation

Water is a polar molecule, meaning it has partial positive and negative charges that attract ions and polar molecules, allowing it to dissolve many food components. High specific heat, surface tension, and viscosity affect heating and flow but are not the main reason for solubility.