Podcast
Questions and Answers
What is the main purpose of a septic tank?
What is the main purpose of a septic tank?
- To allow sewage solids to settle anaerobically (correct)
- To provide leaching of wastewater by sides
- To discharge effluent from bathrooms and kitchens
- To store settled matter for up to 5 years
How often should water-tight cesspools be cleaned?
How often should water-tight cesspools be cleaned?
- Once every 24 hours
- Every 1-5 years
- At regular intervals depending on sewage volume
- Every 6 months (correct)
What characterizes a cesspool suitable for porous soils?
What characterizes a cesspool suitable for porous soils?
- Bottom well above ground water level
- Allows water to disappear in 24 hours (correct)
- Large capacity with no leaching
- Loose lining by stone or brick
Why are seepage pits needed?
Why are seepage pits needed?
In what way do seepage pits and cesspools differ?
In what way do seepage pits and cesspools differ?
What is the minimum recommended capacity for a cesspool per person per month?
What is the minimum recommended capacity for a cesspool per person per month?
What is the unit of measurement commonly used to express concentrations of air pollutants?
What is the unit of measurement commonly used to express concentrations of air pollutants?
To convert from volumetric units to mass per unit volume and vice versa, what factor needs to be considered?
To convert from volumetric units to mass per unit volume and vice versa, what factor needs to be considered?
What is the volume in liters occupied by 1 mole of an ideal gas at standard conditions (0°C and 1 atm)?
What is the volume in liters occupied by 1 mole of an ideal gas at standard conditions (0°C and 1 atm)?
Which of the following is NOT considered an air pollutant mentioned in the text?
Which of the following is NOT considered an air pollutant mentioned in the text?
What is one of the adverse effects mentioned in relation to high concentrations of air pollutants?
What is one of the adverse effects mentioned in relation to high concentrations of air pollutants?
What environmental effect can air pollution have on materials such as rubber?
What environmental effect can air pollution have on materials such as rubber?
In societies with rapidly developing industries, why may there be insufficient investment in air pollution control?
In societies with rapidly developing industries, why may there be insufficient investment in air pollution control?
'Mega cities' are characterized by what environmental issue mentioned in the text?
'Mega cities' are characterized by what environmental issue mentioned in the text?
'Air pollution may be defined as any atmospheric condition in which certain substances are present in such concentrations that they can produce undesirable effects on man and his environment.' What is a key aspect of this definition?
'Air pollution may be defined as any atmospheric condition in which certain substances are present in such concentrations that they can produce undesirable effects on man and his environment.' What is a key aspect of this definition?
'Air pollution can also affect the quality of life in general.' What is used as an example to illustrate this point?
'Air pollution can also affect the quality of life in general.' What is used as an example to illustrate this point?
What is the main reason why air pollution has been difficult to document with certainty?
What is the main reason why air pollution has been difficult to document with certainty?
Which health effect is associated with high levels of air pollution?
Which health effect is associated with high levels of air pollution?
What is a characteristic of air pollutants like particulates or photochemical oxidants at high levels?
What is a characteristic of air pollutants like particulates or photochemical oxidants at high levels?
What is a health risk associated with exposure to lead from air pollution?
What is a health risk associated with exposure to lead from air pollution?
Which pollutant tends to occur mostly during the summer months in developed areas?
Which pollutant tends to occur mostly during the summer months in developed areas?
Which of the following pollutants is classified as a Criteria Pollutant according to the US-EPA?
Which of the following pollutants is classified as a Criteria Pollutant according to the US-EPA?
What contributes to the increased risk of chronic respiratory disease associated with Total Suspended Particulate matter (TSP)?
What contributes to the increased risk of chronic respiratory disease associated with Total Suspended Particulate matter (TSP)?
Which activity does NOT contribute to the sources of Total Suspended Particulate matter?
Which activity does NOT contribute to the sources of Total Suspended Particulate matter?
Which gas is colorless but has a suffocating, pungent odor?
Which gas is colorless but has a suffocating, pungent odor?
What is the primary source of nitrogen dioxide (NO2)?
What is the primary source of nitrogen dioxide (NO2)?
What can exposure to carbon monoxide (CO) lead to?
What can exposure to carbon monoxide (CO) lead to?
Which secondary pollutant is formed when sunlight causes photochemical reactions involving NOX and VOCs?
Which secondary pollutant is formed when sunlight causes photochemical reactions involving NOX and VOCs?
What are hazardous air pollutants (HAPS) known for?
What are hazardous air pollutants (HAPS) known for?
Why is radon considered an indoor air pollutant?
Why is radon considered an indoor air pollutant?
What is a primary source of lead (Pb) emission into the atmosphere?
What is a primary source of lead (Pb) emission into the atmosphere?
Which activity can contribute to elevated concentrations of harmful chemicals indoors?
Which activity can contribute to elevated concentrations of harmful chemicals indoors?
What are toxic air pollutants known for causing?
What are toxic air pollutants known for causing?
What distinguishes primary air pollutants from secondary air pollutants?
What distinguishes primary air pollutants from secondary air pollutants?
What is the main effect of sulfur dioxide according to studies mentioned in the text?
What is the main effect of sulfur dioxide according to studies mentioned in the text?
Which group of individuals is particularly susceptible to the effects of sulfur dioxide?
Which group of individuals is particularly susceptible to the effects of sulfur dioxide?
How do acid aerosols such as sulfur dioxide and sulfates tend to deposit in the lungs?
How do acid aerosols such as sulfur dioxide and sulfates tend to deposit in the lungs?
What is a significant health effect associated with nitrogen dioxide exposure?
What is a significant health effect associated with nitrogen dioxide exposure?
How is nitrogen dioxide primarily produced?
How is nitrogen dioxide primarily produced?
Which pollutant has been implicated in causing mortality in association with ultrafine particulates?
Which pollutant has been implicated in causing mortality in association with ultrafine particulates?
What is the WHO guideline level for exposure to nitrogen dioxide for 24 hours?
What is the WHO guideline level for exposure to nitrogen dioxide for 24 hours?
Flashcards are hidden until you start studying
