RS/ REHS Practice EXAM QUESTIONS AND ANSWERS 100% SOLVED (Newest 2025), Exams of Nursing

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What is the most common cause of bacterial meningitis in children under five years of age? a) Neisseria meningitides b) Group B Streptococci c) Streptococcus pneumoniae d) Haemophilus influenzae type B - Correct Answers ✅d) Haemophilus influenzae type B How is "giardiasis" usually transmitted to others? a) Person-to-person transfer of cysts from the feces of the infected individual b) Drinking unfiltered water from streams and lakes c) Drinking unboiled water from streams and lakes d) Drinking inadequately chlorinated water from a municipal water distribution system - Correct Answers ✅a) Person-to- person transfer of cysts from the feces of the infected individual Which of the following duties of state and local health agencies is focused to protect the public's health and welfare? a) Community-intensive planning b) Statutory administrative action c) Regulatory responsibilities

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d) Plan implementation - Correct Answers ✅c) Regulatory responsibilities Which of the following is a measure of the amount of light scattered by particles suspended in a water test sample? a) Formazin Turbidity Units (FTU) b) Nephelometric Turbidity Units (NTU) c) Hydrosyntalic Turbidity Units (HTU) d) Lorcetic Turbidity Units (LTU) - Correct Answers ✅b) Nephelometric Turbidity Units (NTU) What is an epidemic? a) The constant presence of a disease within a community or region b) The presence of an infectious agent on a body surface c) The presence of infection in a host without clear, recognizable clinical symptoms d) The occurrence in a community or region of cases of an illness clearly in excess of expectancy - Correct Answers ✅d) The occurrence in a community or region of cases of an illness clearly in excess of expectancy What portal of entry should a field sanitarian protect to avoid contracting Lyme disease? a) Skin

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Hemolytic Uremic Syndrome is caused by an infection with a) dracunculus medinensis b) staphylococcus aureus c) escherichia coli O157:H d) salmonella typhimurium - Correct Answers ✅c) escherichia coli O157:H The basic principles of disease control include all of the following except a) lag phase b) control of disease source c) mode of transmission d) understanding susceptibility - Correct Answers ✅a) lag phase Which one of the following phrases most accurately describes the term endemic? a) sporadic occurrence of an illness b) illnesses that exceed expected levels c) all illnesses present at any one time d) constant presence of an illness - Correct Answers ✅d) constant presence of an illness

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The interval between exposure to an infectious agent and the appearance of the first symptom is called the a) transmission period b) susceptible period c) reactive period d) incubation period - Correct Answers ✅d) incubation period An environmental health specialist receives a cash payment from a restaurant operator in order to receive a passing restaurant inspection score. This event is known as a) malfeasance b) misfeasance c) nonfeasance d) exclusionary rule - Correct Answers ✅a) malfeasance An environmental health manager trains environmental health specialists on the operation of environmental probe thermometers. In the interest of time, the manager omits a training section on safe sheathing of the thermometer, and subsequently an environmental health specialist punctures their finger and injures themselves. This is an example of a) malfeasance b) misfeasance c) nonfeasance

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d) corporate privilege - Correct Answers ✅a) respondeat superior Performance of an authorized act in an unauthorized manner is called a) nonfeasance b) misfeasance c) malfeasance d) disfeasance - Correct Answers ✅b) misfeasance An action authorized by law to restrict or prevent the movement of goods for the protection of public health, safety and welfare is called an order of a) injunction b) withholding c) embargo d) seizure - Correct Answers ✅c) embargo What is the federal agency that regulates food additives? a) CDC b) Consumer Product Safety Commission (CPSC) c) Department of Agriculture d) Food and Drug Administration - Correct Answers ✅d) Food and Drug Administration

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When a legal action is being prepared, one of the first steps a sanitarian should take is to: a) obtain a warrant b) obtain a court order c) keep accurate records d) check with other agencies - Correct Answers ✅c) keep accurate records How is the term "contamination" defined when used in connection with a communicable disease? a) infection of an individual or animal with pathogenic organisms b) presence of pathogenic agents on a surface, article, or substance c) transfer of a vector, regardless of time or the nature of the host d) contact between two or more sources of infection - Correct Answers ✅b) presence of pathogenic agents on a surface, article, or substance What is the most common contributing factor to foodborne illness? a) insect and rodent infestations b) dirty equipment

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d) adequate refrigeration and cleanliness - Correct Answers ✅d) adequate refrigeration and cleanliness What is the maximum accumulated time that time/temperature control for safety food can safely be exposed to the temperature danger zone? a) 2 hours b) 4 hours c) 6 hours d) 8 hours - Correct Answers ✅c) 6 hours If time only is used as a public health control, the maximum period of time recommended by the FDA for time/temperature control for safety food to be held is: a) 2 hours b) 4 hours if the warmest part of the food item does not exceed 120F c) 6 hours if the warmest part of the food item does not exceed 70F d) this public health control is never permitted - Correct Answers ✅c) 6 hours if the warmest part of the food item does not exceed 70F What is the minimum period that the FDA recommends employees wash their hands and arms up to the elbow?

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a) 10 seconds b) 20 seconds c) 30 seconds d) 40 seconds - Correct Answers ✅b) 20 seconds Unpasteurized eggs not intended for immediate service should be cooked to a) 165F for 15 secs b) 155F for 15 secs c) 145F for 15 secs d) 140F for one minute - Correct Answers ✅b) 155F for 15 secs What is the usual mode of infection from Salmonella? a) ingestion of contaminated food b) ingestion of contaminated water c) contact with an active case d) contact with fomites - Correct Answers ✅a) ingestion of contaminated food What is the source of scombroid poisoning? a) Histamines in the muscle of fish b) Sprouted green potatoes

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What is the most effective practice for preventing trichinosis in people? a) be certain that ground meat is freshly ground at the time of purchase b) be sure that fresh pork is thoroughly cooked c) avoid the consumption of ground meat products d) cook steak until well done - Correct Answers ✅b) be sure that fresh pork is thoroughly cooked A HACCP plan is not required when a) smoking foods as a method of preservation b) cooling and reheating TCS foods in bulk c) performing reduced oxygen packaging d) using food additives or adding other components to preserve food or render it non-TCS - Correct Answers ✅b) cooling and reheating TCS foods in bulk What should not be done with food samples collected during a foodborne illness investigation? a) refrigerate b) freeze c) seal d) label - Correct Answers ✅b) freeze

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What is the primary requirement in designing a food service facility? a) durability b) cleanability c) appearance d) convenience - Correct Answers ✅b) cleanability What is the most important rule of food storage? a) follow the "first in, first out" rule b) store products in order of "pull by" date c) repackage dry foods into metal containers d) store canned goods under refrigeration - Correct Answers ✅a) follow the "first in, first out" rule Insecticides/pesticides may be stored in all ways except: a) in a metal locked cabinet b) on the lowest shelf in the storage room c) above the dishwashing sinks d) in the basement separate from food and other chemicals - Correct Answers ✅c) above the dishwashing sinks What type of well is considered LEAST likely to become contaminated?

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c) cartridge d) slow sand - Correct Answers ✅d) slow sand All of the following are used to disinfect water except: a) chlorine b) bromine c) fluorine d) iodine - Correct Answers ✅c) fluorine Backsiphonage may be prevented by all of the following methods except: a) hydrostatic loops b) vacuum breakers c) air gap separation d) backpressure units - Correct Answers ✅a) hydrostatic loops Which of the following is the least effective method for cadmium removal from drinking water? a) activated carbon b) iron coagulation c) lime softening d) ion exchange - Correct Answers ✅a) activated carbon

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Before a drinking water sample is taken, the sampling tap should be clean, free of leaks, and flushed for how long? a) 1 to 1 1/2 minutes b) 2 to 3 minutes c) 4 to 5 minutes d) 6 to 7 minutes - Correct Answers ✅b) 2 to 3 minutes What contaminant has been associated with learning and cognitive disorders in children who drink contaminated water? a) Manganese b) Copper c) Lead d) Parathion - Correct Answers ✅c) lead The wastewater from the flushing of a water closet, latrine, or privy is referred to as a) gray water b) black water c) green water d) brown water - Correct Answers ✅b) black water If a septic tank is pumped during a wet period, the

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a) Yes, because hydrogen sulfide and odors were not detected b) No, because oxygen content and methane were not tested c) Yes, because the absence of odors and H2S indicates acceptable confined space entry conditions d) No, because a lack of H2S is a sign of a hazardous confined space atmosphere - Correct Answers ✅b) No, because oxygen content and methane were not tested All of the following are true about ozone as a disinfectant except which one? a) nontoxic to aquatic organisms b) source of dissolved oxygen c) excellent viricide d) long-lasting residual - Correct Answers ✅d) long-lasting residual Aerobic bacteria require all of the following nutrients except a) carbon b) magnesium c) phosphorus d) nitrogen - Correct Answers ✅b) magnesium What does a mottled brown and red soil indicate?

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a) unsuitability for absorption due to chemical composition b) suitability for absorption due to granular structure c) inadequate aeration methods d) adequate agglomeration - Correct Answers ✅c) inadequate aeration methods Alternative small wastewater treatment systems are considered UNLESS: a) impervious formations are found at a depth of 10 feet b) space is limited and surface water supplies are inadequate c) highly porous formations exist d) high groundwater exists - Correct Answers ✅a) impervious formations are found at a depth of 10 feet Lime coagulation, mixed media filtration, and activated carbon filtration will greatly reduce: a) heavy metals b) biological contaminants c) EPA priority pollutants d) EPA listed hazardous wastes - Correct Answers ✅c) EPA priority pollutants It is known that some common pathogenic organisms found in wastewater will survive more than ____ of harsh temperature extremes.