AALSO Water Quality Level 1 Practice Test

These questions are part of the practice quiz. Start practicing

• When a flow interruption occurs in UV disinfection plumbing, what should be maintained in the chamber?
• What does a negative ORP result indicate?
• Define 'Oxidation-reduction potential'.
• Which statement best describes ozone in water quality terms?
• Which statement correctly describes a step in the nitrogen cycle?
• An ORP of 300 mV would fall within the typical range for which component?
• What is a volumetric flask used for?
• Which of the following best describes a reducing environment in terms of ORP value sign?
• How often should UV sterilization bulbs be changed?
• What does ORP stand for?
• Which combination is described as converting nitrate to elemental nitrogen?
• In water quality, what is the definition of Matrix?
• Which is considered the more toxic form of ammonia?
• What wavelength range is typical for UV sterilization used in water treatment?
• Which statement best distinguishes systemic error from gross error?
• Alkalinity in water quality is defined as?
• Which method uses well trays to estimate bacterial counts?
• In the hazard control hierarchy, what is the second most effective hazard control?
• What does MPN stand for?
• Which statement describes the relationship between MPN and CFU?
• What causes New Tank Syndrome?
• Ozone-treated water is described as turning which color?
• What is the recommended practice in the UV sterilizer chamber during a flow interruption?
• New Tank Syndrome refers to which condition in a new system?
• Which statement about absorption spectroscopy is true?
• Which term describes a sample fortified with analyte to test method performance?
• New Tank Syndrome is primarily caused by what issue?
• Why is chlorine unsafe for fish and invertebrates in a water system?
• CFU measures what?
• Which aspect of the UV bulb most affects its performance?
• Which item must be included on all chemical labels?
• Which glassware would you use to measure liquids accurately with a tall, narrow shape?
• In water quality, ORP measures the net status of what?
• Which item is not required on chemical labels?
• Define precision.
• What is the chemical composition of ammonium?
• Which ozone application has the higher AOD range?
• What is the target analyte?
• Why should you not add water to acid?
• ppm equivalent to?
• Which SDS section contains information on handling and storage?
• What is the equation for calculating pH?
• What is the difference between [Compound] and [Compound]-N units?
• What type of rays are used for ultraviolet sterilization?
• What is a laboratory fortified blank used for?
• What is another term for a laboratory fortified matrix?
• What is another term for probes?
• In the nitrogen cycle, which process converts ammonia to nitrite?
• During downtime of a UV disinfection system, what must be kept in the chamber to protect the lamp?
• Which action is NOT listed as a goal of chemical clean-up?
• What is an Erlenmeyer flask best used for?
• Ammonia oxidizing bacteria are which of the following?
• A Laboratory Fortified Matrix Duplicate is best described as which of the following?
• What condition in the UV sterilizer chamber reduces risk of thermal shock when flow stops?
• Alkalinity in water quality is defined as which of the following?
• What is the chemical composition of ozone?
• DPD Method is used to measure?
• A pictogram indicating explosive marks which hazard category on chemical labels?
• Salinity is defined as what?
• Which glassware would you use to measure a precise fixed volume of liquid and for dilutions?
• Engineering controls are which of the following?
• A Laboratory Fortified Blank is best described as which of the following?
• Which pictogram indicates severe health hazards?
• What is the preferred applied ozone dose range?
• AOB stands for?
• Which device is used to deliver precise volumes in a titration context?
• Which pictogram indicates environmental toxicity?
• Who adopted that GHS?
• During clean-up, how should broken glass be disposed of?
• Define systemic error
• PPE stands for what?
• What best describes a Matrix Duplicate?
• What does pH express?
• What unit is used for ORP?
• Define 'oxidation'.
• What is the chemical composition of ammonia?
• What is the typical range of ORP values for the contact vessel?
• What does LFM stand for?
• Administrative controls are best described as which of the following?
• Which pictogram indicates corrosives?
• Define gross error
• What is a graduated cylinder best used for?
• Which water factor will affect the efficacy of UV sterilizers?
• What guideline helps prevent breakage of the quartz components in a UV sterilizer when flow stops?
• Which pictogram indicates a gas under pressure?
• What is ozone used for?
• What is the typical range of ORP values for the exhibit return?
• Spectrophotometers measure what property of a sample?
• What does a positive ORP result indicate?
• What is the primary purpose of UV sterilization in water treatment?
• What practice helps protect the UV lamp during a flow stop in the system?
• What is the maximum end of the preferred ozone dose range?
• Which term corresponds to the degree of agreement between experimental result and true value?
• What are the two possible endpoints for titrations?
• What is another term for electrodes?
• Is ozone safe to use for fish and invertebrates?
• What is MPN used for?
• What is the range of AOD for microflocculation?
• Define 'reagent blank'.
• What is the preferred unit for salinity?
• What does LFB stand for?
• Define sample blank.
• What is old tank syndrome?
• What color does ozone turn water?
• What is the calculation for AOD?
• Define 'Globally Harmonized System'.
• Which pictogram indicates harmful irritant?
• How does ozone control pathogens?
• What is the effect of increased water turbidity on UV sterilizer effectiveness?
• Which statement is true about ozone in water treatment?
• CFU stands for?
• In the nitrogen cycle, which statement correctly describes the conversion of nitrite to nitrate?
• A Laboratory Fortified Matrix is best described as which of the following?
• What is the typical range of ORP values for the exhibit supply?
• Ammonia oxidizing bacteria promote which process?
• Define 'Safety data sheet'.
• How is MPN obtained?
• What is a laboratory fortified matrix used for?
• Which device is used to deliver precise volumes during a titration?
• Which category in hazard controls includes barriers, ventilation, and isolation?
• Which pictogram indicates acute toxicity?
• Which instrument is most commonly used to perform titration measurements?
• What instrument is used for potentiometry?
• Which procedure should be followed if the UV sterilizer experiences a loss of flow?
• What is the wavelength range of UV-C rays used for sterilization?
• Which two factors could potentially cause a decrease in alkalinity?
• What is a burette used for?
• What should remain in the UV sterilizer chamber if the water flow stops?
• Which pictogram would indicate a chemical that could cause severe health hazards and long-term effects upon exposure?
• Define 'oxidant'.
• Which is NOT part of required SDS sections?
• What is absorption spectroscopy?
• What is a Laboratory Fortified Blank?
• In titration practice, which endpoint option is commonly recognized?
• Is chlorine safe for fish and invertebrates in a water system?
• What does SDS stand for?
• Which SDS section is used for accidental release measures?
• Which pictogram indicates gas under pressure?
• What is a beaker best used for?
• Can UV sterilizers truly sterilize?
• Which instrument is commonly used to measure salinity by electrical conductivity?
• If a container is labeled with a pictogram for corrosives, which handling precaution is most appropriate?
• What is the difference between CFU and MPN?
• What unit is measured in potentiometry?
• When a UV sterilizer experiences a flow stop, what should be done to protect the quartz tube and bulb?
• AOD stands for?
• Potentiometry is defined as?
• Which vessel typically has ORP values greater than 650 mV?
• What is salinity?
• What does ppt stand for in salinity units?
• Which pictogram indicates flammable?
• Which statement best describes the purpose of a sample blank in instrument calibration?
• Using the AOD formula, if dose is 2 mg/min and flow is 4 L/min, what is the AOD?
• Which statement best describes a laboratory fortified blank?
• What happens when the ORP in a water system exceeds 650 mV?
• Which glassware is typically used for holding and pouring liquids but is not used for precise volume measurements?
• To prevent breakage of the quartz tube and bulb, what should the UV unit do when flow stops?
• Which glassware is least suitable for precise volume measurements?
• Define 'ozone' (water quality definition).
• Which item is required to be on an SDS?
• When mixing acid and water, how should you combine them?
• Which statement describes a Laboratory Fortified Matrix?
• What does GHS stand for?
• Applied ozone dose is defined as?
• Define random error.
• What precaution should be taken in a UV sterilizer when flow stops to prevent thermal stress?
• Which statement about ORP is true?
• The Hach machine is what type of instrument?
• How is CFU obtained?
• In the hazard control hierarchy, what is the most effective control?
• Which option lists all factors affecting UV sterilizer efficacy?
• Which form of ammonia is less toxic?
• If a chemical has the acute toxicity pictogram, what does that imply about exposure?
• Which glassware would you use to prepare a precise standard solution by delivering a fixed volume?
• Administrative controls are best described as?
• In UV sterilizer plumbing, what action is recommended if the water flow ceases?
• UV sterilization is best described as providing disinfection rather than sterilization.
• Which pictogram indicates oxidizers?
• What does the 'First-aid measures' section of an SDS provide?
• What quantity of chlorine is typically added to a system?
• What does the 'Exposure Controls/Personal Protection' describe?
• If water flow ceases in a UV sterilizer chamber, what is the advised condition to prevent thermal damage?
• What is the range of AOD for sterilization?
• Which pictogram is used for substances that could harm the environment?
• Which precaution is recommended if a UV sterilizer loses flow?
• During UV system installation, what should be kept in the chamber if flow stops to avoid damaging components?
• Which instrument measures salinity by refractive index?
• Which glassware has a narrow neck and is typically used to minimize splashes during mixing?
• Which action is listed as a clean-up step for residue?
• In water quality, which statement correctly defines Matrix?
• What defines a Laboratory Fortified Matrix Duplicate?
• Which statement defines accuracy?