NEHA REHS/RS Exam - Practice Questions Already Graded A

NEHA REHS/RS Exam - Practice Questions Already Graded A The Inverse Square Law is commonly used in which environmental health program areas to calculate the intensity or strength of a substance at a specified distance from the point source? a. radiation, lighting, and noise b. noise, air emissions, and radiation c. radiation, fluoridation in water, lighting, and noise d. lighting, sewage contamination in stream, and air emissions A If 15x + 3 = 7x - 13, then x equals a. - 2.0 b. +2.0 c. +2.5 d. +4.0 A What is the legal term which describes the failure to perform an official duty as an Environmental Health Specialist without sufficient excuse? a. malfeasance b. misfeasance c. nonfeasance d. criminal responsibility C In the field of public health law, state government's police power is an attribute of a sovereign government; whereas, the federal government is a government of a. absolute police power. b. delegated police power. c. limited delegated powers. d. constitutional police power. C An epidemiological study which follows a group of people over time is a _____ study. a. regressive b. prospective c. progressive d. retrospective B A sample collected over a short time period where the atmospheric concentration is assumed to be consistent throughout the sample period is called a(an) _____ sample. a. grab b. small c. partial d. integrated A Adequate cooking will not always prevent Clostridium perfringens food poisoning because a. the enterotoxin is heat stable. b. the spores are heat-resistant and may survive. c. it is a rapidly growing pyrophilic organism. d. incomplete heat distribution results in new bacterial colony formation. B The level that a vacuum breaker must be installed above the flood rim of the fixture or receptacle it is serving is called the _____ level. a. installation b. anti-siphoned c. critical d. backflow C Pursuant to the California Right to Know Law, facilities that handle hazardous materials are primarily required to submit a. Material Safety Data Sheets. b. a business plan. c. a list of all hazardous materials. d. a list of all acutely hazardous materials. B The Paint Filter Liquid Test is used at landfills to determine a. the soil permeability of cover material. b. the sludge content of incoming waste. c. if leachates have been formed. d. if wastes may be landfilled. D Which statement about hydraulic conductivity in soils is true? a. Hydraulic conductivity increases for all soils as they dry. b. Soils with small, discontinuous water-filled pores have high hydraulic conductivity. c. Unsaturated soils with large air-filled pores have a high hydraulic conductivity. d. As soils dry, the hydraulic conductivity of clay soils can become greater than that of sandy soils. D Assuming a high-rate sand filter is operated at 15 gallons per minute per square foot, the minimum size filter needed for a 36,000-gallon swimming pool operating with a six hour turnover rate is _____ square feet. a. 6.67 b. 12.72 c. 23.33 d. 40.01 A In the event of a natural disaster, the safest source of drinking water would be from a(an) a. toilet tank. b. open cistern. c. water heater. d. swimming pool. C Radon does not have the characteristic of a. being known to cause cancer. b. having a long half-life. c. having the ability to enter homes through a water well. d. occurring naturally in the soil. B The causative agent of Weil's Disease resulting from direct or indirect contact with the infected urine of rodents and certain other animals is _____ spp. a. Yersinia b. Leptospira c. Rickettsia d. Wuchereria B Inhalation of asbestos fibers may cause asbestosis, a. cancer, and mesothelioma. b. eye irritation, and skin rash. c. coughing, and pulmonary edema. d. lyphotheliomia, and sensitization. A The problems associated with pneumoconiosis are not heavily influenced by the a. rate of pressure rise. b. size of dust particles. c. length of particle exposure. d. concentration of airborne dusts. A The determination of overcrowding in residential units is based on the number of persons per a. bedroom. b. net square feet of habitable room. c. gross square feet of residential unit. d. cubic feet of airspace in dwelling unit. B Which situation best describes an incompatible land-use? a. One property is adversely impacted by the environmental pollutants generated on an adjacent parcel. b. The value of one property is greatly increased because of the presence of a more valuable land-use for nearby property or properties. c. The land-use allowed on one property adversely affects the health of the residents on an adjacent property. d. The land-use allowed on one parcel or property adversely impacts or restricts the use of an adjacent or nearby property or properties. D Two identical pumps located side-by-side produce a sound level of 80 dBA at a distance of 10 feet. If one of the pumps is turned off, the sound level at 10 feet is dBA. a. 40 b. 70 c. 77 d. 80 C