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RS/ REHS Practice Questions & Answers
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 - Answer--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 - Answer--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 d) Plan implementation - Answer--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) - Answer--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 - Answer--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 b) Respiratory tract c) Reproductive organs d) Digestive tract - Answer--a) Skin Swimmer's itch is a common name for which of the following diseases? a) Leptospirosis b) Subdural dermatitis c) Schistosomiasis d) Trichiniasis - Answer--c) Schistosomiasis
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 - Answer--d) constant presence of an illness 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 - Answer--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 - Answer--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 d) exclusionary rule - Answer--c) nonfeasance
An environmental health specialist informs vector control staff to perform "landing counts" on their skin in a known mosquito breeding ground which is confirmed to be positive with West Nile virus. This is an example of a) malfeasance b) misfeasance c) nonfeasance d) exclusionary rule - Answer--b) misfeasance Vehicleborne, vectorborne, or airborne are all examples of: a) indirect mode of transmission b) direct mode of transmission c) hosts d) life cycle sequences - Answer--a) indirect mode of transmission An employer is held liable for the torts of its employees committed within the scope of their employment. This is referred to as: a) respondeat superior b) parens patriae c) substituted judgement d) corporate privilege - Answer--a) respondeat superior Performance of an authorized act in an unauthorized manner is called a) nonfeasance b) misfeasance c) malfeasance d) disfeasance - Answer--b) misfeasance
What is the most common contributing factor to foodborne illness? a) insect and rodent infestations b) dirty equipment c) incorrect labeling of containers d) improper holding temperatures - Answer--d) improper holding temperatures Why are some foods classified as time/temperature control for safety? a) they have a pH below 4. b) they have a water activity below 0. c) they support rapid growth of pathogenic microorganisms d) they require rapid and thorough cooking - Answer--c) they support rapid growth of pathogenic microorganisms Which food does not require refrigeration at 41F (5C)? a) open container of garlic in oil b) tofu c) sliced/cut cantaloupe d) UHT creamers - Answer--d) UHT creamers What is the best means of inhibiting the growth of microorganisms in fresh meat? a) topical use of approved hypochlorite solutions b) exposure to ultraviolet light for 30 minutes c) chemical preservatives d) adequate refrigeration and cleanliness - Answer--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 - Answer--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 - Answer--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? a) 10 seconds b) 20 seconds c) 30 seconds d) 40 seconds - Answer--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 - Answer--b) 155F for 15 secs
The laboratory reports a positive coliform test that exceeds permissible limits on a bottle of pasteurized milk. What does this indicate? a) improper bactericidal treatment of the equipment b) improper virucidal treatment of the equipment c) a contaminated water supply d) a contaminated food supply - Answer--a) improper bactericidal treatment of the equipment 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 - Answer--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 - Answer--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 - Answer--b) freeze
What is the primary requirement in designing a food service facility? a) durability b) cleanability c) appearance d) convenience - Answer--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 - Answer--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 - Answer--c) above the dishwashing sinks What type of well is considered LEAST likely to become contaminated? a) drilled b) bored c) driven d) dug - Answer--a) drilled Diatomaceous earth filters
b) vacuum breakers c) air gap separation d) backpressure units - Answer--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 - Answer--a) activated carbon 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 - Answer--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 - Answer--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 - Answer--b) black water If a septic tank is pumped during a wet period, the a) water may flow into the tank b) field may flood the tank c) tank may float out of the ground d) tank may be crushed by the wet earth - Answer--c) tank may float out of the ground Nutrients associated with eutrophication include all of the following except a) organic carbon b) potassium c) nitrogen d) phosphates - Answer--b) potassium Which of the following is least important when reducing sewage to gases? a) anaerobic bacteria b) earthworms c) protozoa d) aerobic bacteria - Answer--b) earthworms A septic tank maintenance worker has checked an empty tank for the presence of hydrogen sulfide (H2S). The test was negative, and there are no odors indicating the presence of other hazardous gases. Is the tank safe to enter without a respirator and supplied air? a) Yes, because hydrogen sulfide and odors were not detected
c) highly porous formations exist d) high groundwater exists - Answer--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 - Answer--c) EPA priority pollutants It is known that some common pathogenic organisms found in wastewater will survive more than ____ of harsh temperature extremes. a) 2 months b) 5 months c) 2 years d) 5 years - Answer--c) 2 years A storm sewer is used to a) remove rain and other standing surface water b) remove sewage and storm water c) remove household water waste and gutter drain water d) remove non-toxic, non-hazardous wastewater - Answer--a) remove rain and other standing surface water Stream pollution is sometimes apparent by a) increased levels of available oxygen in the water b) a zone of degradation
c) large numbers of crayfish and cristivomer species d) large numbers of small fish - Answer--b) a zone of degradation A young lake is considered to be a) eutrophic b) mesotrophic c) oligotrophic d) ohytotrophic - Answer--c) oligotrophic If the septic tank will also have a garbage disposal unit feeding into it, the a) size of the tank should be increased by 50% b) tank should have an agitator c) tank should not be equipped with a gas baffle d) tank should not be constructed with precast concrete - Answer--a) size of the tank should be increased by 50% Sludge accumulation in a tank serving a normal home has been estimated at a) 40 to 50 liters per person per year b) 69 to 80 gals per person per year c) 18 to 21 gals per person per year d) 2.2 gals per person per year - Answer--c) 18 to 21 gals per person per year How often should a septic tank for a private home be serviced? a) every year b) every 5-10 years c) every 3-5 years
b) It must be disposed as a hazardous waste by a professional hazardous waste company c) It must be incinerated d) It may be disposed in a storm drain or sanitary sewer - Answer--a) Household hazardous waste is exempt from RCRA requirements The grinding of garbage is an acceptable method of a) garbage disposal b) volume reduction c) wet oxidation d) energy recovery - Answer--a) garbage disposal A solid waste manager is trying to reduce lead in the solid waste stream. What should be targeted in the municipal waste stream as a major contributor of lead to the environment? a) fluorescent light tubes b) lead acid batteries c) household batteries d) rechargeable batteries - Answer--b) lead acid batteries All of the following are considered advantages of using the "shredded solid waste" landfill method except a) it does not cause odors b) it may require daily earth cover c) it will readily absorb precipitation d) it reduces insect breeding - Answer--c) it will readily absorb precipitation The BEST sanitary landfill method for a location with rolling terrain is the: a) low-area method
b) valley or ravine area method c) trench method d) area or ramp method - Answer--d) area or ramp method Why is it important for a business that generates hazardous waste to deal only with licensed disposal companies that have a good compliance history? a) large companies with good compliance history generally have deep pockets b) once the hazardous waste disposal company picks up the waste, it becomes the responsible party c) the business is held accountable for where and how the hazardous waste generated is disposed of d) it is important only if the business generates 220 pounds or more per month hazardous waste - Answer--c) the business is held accountable for where and how the hazardous waste generated is disposed of Which of the following is not a type of hazardous waste incinerator? a) pressurized b) fluidized c) fixed hearth d) rotary kiln - Answer--a) pressurized Which federal law regulates underground storage tanks for hazardous wastes? a) Clean Water Act b) Federal Water Pollution Control Act c) Resource Conservation and Recovery Act d) Solid Waste Disposal Act - Answer--c) Resource Conservation and Recovery Act A measure of the probability and severity of adverse effects under specific conditions best describes a) risk
