EHS NEHA Exam Questions With 100% Correct Answers, Latest Updated 2024/2025 (Graded)

How do you filter out giardia lambia? - Correct Answer-Rapid sand filtration Pharmaceuticals in water treatment plants are - Correct Answer-Both solid and liquid Which mosquito is the highest cause of encephalitis in the US? - Correct Answer-Culex What is it called when milk is heated to 191-212 - Correct Answer-Pasteurization Order of priority: power outage at restaurant, chlorine gas leak at pool, no hand sink at food festival - Correct Answer-Chlorine gas, power outage, no hand sink What is an antibacterial agent used on skin tissue called ? - Correct Answer-Antiseptic What is the most common cockroach in US? - Correct Answer-German What type of cockroach is referred to as a water bug? - Correct Answer-Either American or Oriental What is the minimum distance between a water line and a sewer line in a trailer park? - Correct Answer-10 ft What is the slope for ramps determined by the Americans with Disabilities Act (ADA) - Correct Answer-1:12 or less NSF and USL are organizations that - Correct Answer-Certify food service equipment. What is the amount of soil you must put on a finished landfill - Correct Answer-24 inches What is most likely to carry Hantavirus? - Correct Answer-Rodents Which is least likely to cause bites and itching in an urban setting - Correct AnswerTicks What does HACCP stand for? - Correct Answer-Hazard Analysis and Critical Control Points Methemoglobinemia (a blood disorder) is caused by : - Correct Answer-Nitrates Cole's EHS NEHA Exam Questions With 100% Correct Answers Latest Updated 2024/2025 | Graded Hazardous waste : CRIT - Correct Answer-Corrosive, reactive, ignitable, toxic Organization that tests breathing apparatus - Correct Answer-OSHA Who is the incident commander? - Correct Answer-The person with jurisdiction, person responsible for all aspects of emergency response What is the calculation for pool turnover rate? - Correct Answer-Turnover rate (hours)= pool volume (gallons) / flow rate (gallons per minute) x 60 (minutes per hour) Sous vide foods can lead to what foodborne illness? - Correct Answer-Clostridium botulinum What can you use after a national disaster? - Correct Answer-Canned goods Where do you store iced fish in the refrigerator? - Correct Answer-Below ready to eat foods and above raw meats What is considered comminuted? - Correct Answer-Hot dogs and hamburgers What is bacteria that cannot grow in oxygen called? - Correct Answer-Anaerobic Which of these is different from the others? NSF, UL, ASNI, TLE - Correct Answer-TLE Freezing a toxin will have what affect? - Correct Answer-No affect True of false? Alpha particles are easily absorbable - Correct Answer-True (easiest to absorb to hardest to absorb: gamma , beta, alpha), What can alpha particles be blocked by? - Correct Answer-A sheet of paper (beta can pass through paper, stopped by aluminum. Gamma is difficult to stop, needs concrete or other heavy shielding What kind of respirator do you need in 15% oxygen - Correct Answer-SCBA (self contained breathing apparatus Who regulates proper respirators? - Correct Answer-OSHA (occupational safety and health administration) What is the gap in an ice machine for? - Correct Answer-Air gap to prevent backflow contamination Giardia cyst concentration that causes disease - Correct Answer-500:1 What mosquito carries malaria? - Correct Answer-Anopheles What cockroach is most common in urban areas - Correct Answer-German What was modeled after the National Emergency Response - Correct Answer-NIMS (national incident management system) The REHS did something that they knew was unlawful and they did it in an unapproved way - Correct Answer-Malfeasance What role can REHS perform when helping with an ice machine to prevent contamination - Correct Answer-Create a cleaning schedule There has been a flood and the septic tank has not been buried. What is a concern for pumping? - Correct Answer-Floating of the tank Noscomial infections are most severe in - Correct Answer-Hospitals Which airflow from hospitals is least critical? - Correct Answer-Hallway to dirty laundry area What is NIMS? - Correct Answer-National Incident Management System , a systematic proactive approach to guide departments and agencies at all levels of government What is ICS? - Correct Answer-Incident Command System , a systematic tool for the command, control, and coordination of emergency response Depth to water table of six inches requires a - Correct Answer-Sand mound Fast food facilities create the most - Correct Answer-F.O.G (fats, oil, grease) Which bacteria does HACCP target? - Correct Answer-Listeria monocytogenes Prevailing winds ... - Correct Answer-Blow predominantly from a single direction over a particular point on earth's surface What is the first thing you do if you come across mold in a room? - Correct AnswerOpen a window What is the effect of adding co2 to a septic tank? - Correct Answer-Lowers ph What disease is commonly spread through wastewater? - Correct Answer-Hep A What guidance do you give a homeowner with a new septic tank? - Correct AnswerPump regularly What is the best system for a small community? - Correct Answer-Rapid sand Nitrogen is transformed into what during conventional biological processes? - Correct Answer-Ammonia and biological sludge A family complains of multiple bites and a rash. What is the least likely organism to cause it? - Correct Answer-Tick There is a vacant lot that has been used for dumping of unwanted items. What is the correct action that REHS should perform? - Correct Answer-Contact the owner and explain the public health dangers, including the harboring of rodents. Discuss measures to get the site cleaned up, as well as blocking the area/post no dumping signs During an emergency event, there is a worry about a hanta virus outbreak. What educational measures should be put into place to help the public - Correct Answer-How to prevent rodents Define toxicity - Correct Answer-Toxic wastes are harmful or fatal when ingested or absorbed Define Corrosivity - Correct Answer-Corrosive wastes are acids or bases and are capable of corroding metal containers ex: battery acid Define reactivity - Correct Answer-Reactive wastes are unstable under normal conditions. They can cause explosions, undergo violent reactions, generate toxic fumes, gas , or vapors when heated compressed or mixed with water. Example: lithiumsulfur batteries Define ignitability - Correct Answer-Ignitable wastes can create fires under certain conditions, are spontaneously combustible, or have a flash point less than 60 degrees celcius. Ex: waste oils What is due process? - Correct Answer-fair treatment through the normal judicial system, especially as a citizen's entitlement. Amend 5, 6 What is not a concern of silicosis? - Correct Answer-Tiles containing asbestos What part of schools should be tested for radon? - Correct Answer-First floor classrooms What is the biggest obstacle in communicating food inspection results? - Correct Answer-Loud/busy kitchen What would be least likely to contain asbestos? - Correct Answer-Ceramic tiles What type of soil is best for onsite wastewater systems? - Correct Answer-Red, brown, or yellow soil How fast can chemical food poisoning symptoms occur? - Correct Answer-One hour What is it called when you clean human skin? - Correct Answer-Asepsis What is the ph range of staph - Correct Answer-4.0-9.8 Chemical sanitizer does what? - Correct Answer-Kills some but not all bacteria. Usually reduces to a generally acceptable level for public health standards What are the three primary water pollutants? - Correct Answer-Nutrients, sediments, chemicals? Which agency would you refer to for writing water policy? EPA, AWWA, NGWA, UsGS - Correct Answer-Ngwa (national ground water association) What is the correct order of inspections based on priority? - Correct Answer-Recalls, food inspection, failure of a residential septic system Come across a gasoline spill on the highway, what are the appropriate steps to take - Correct Answer-Contain the spill Which is an example or a non-communicable disease? (Diabetes, cholera, influenza, measles - Correct Answer-Diabetes Define nonfeasance - Correct Answer-Not acting when you should. Ex: not closing a restaurant when an imminent health hazard is observed Define malfeasance - Correct Answer-Wrongful conduct, doing something unlawful and in an unapproved way Define misfeasance - Correct Answer-Doing a proper act in an improper manner Tattoo parlors must have what 3 qualities? - Correct Answer-Sterile gloves, handwashing, process for equipment disinfection What are the 7 tips for a healthy home? Keep it... - Correct Answer-Dry, clean, safe, well-ventilated, pest free, contaminant free, well-maintained Which distance is less critical? Well to drain field, drain field to water table, or drain field to bedrock - Correct Answer-Drain field to bedrock What should be considered when installing a well? - Correct Answer-Drainfield Which is most likely to infect water supply? Runoff from chicken farm, contaminated runoff, cesspool next to water supply - Correct Answer-Cesspool next to water supply Which indoor air pollutant is worse? Mold or tobacco smoke? - Correct Answer-Tobacco smoke Silicosis is caused by - Correct Answer-Silica inhilation What type of septic system should be used for a rural community? - Correct AnswerSlow sand filter Toxic lead exposure levels: - Correct Answer-Blood: 10 mg /dl Air : 0.15 mg/m3 Water: 15 mg/L What is the first thing you do if you suspectseveral workers are ill from sick building syndrome? - Correct Answer-Interview complainant (s) What is sick-building syndrome? - Correct Answer-Suffer symptoms or feel unwell for no reason when in a building How many tips of healthy housing are there? - Correct Answer-7 What should an ice machine disposal hook up to? - Correct Answer-Floor drain with air gap What bacteria is used as an indicator for sterilization in an autoclave? - Correct AnswerBacillus sternothermophilus at 10^6 What is the biggest concern at a festival lasting more than three days? - Correct Answer-Water, sewage, food protection