Potential Environmental Impacts of Liquids Flashcards
Hazardous material is not a problem unless
a) a loss of product is experienced
b) a loss of control is experienced
c) it is noticed by operating personnel
d) it is present in the environment
e) it is present in the ecosystem
b) a loss of control is experienced
A common test to determine pollution in water is the (BOD)
test. BOD stands for
a) body oxygen demand
b) biological oxygen demand
c) biochemical oxygen demand
d) biographic oxygen demand
e) biodegradable oxygen demand
c) biochemical oxygen demand
The two main growth nutrients carried by domestic sewage are
a) sulphates and nitrates
b) nitrates and phosphates
c) phosphates and sulphates
d) sulphates and suspended solids
e) sludge and dissolved solids
b) nitrates and phosphates
The ability of water to dissolve oxygen
a) increases with the increase in water temperature
b) decreases with the increase of water temperature
c) decreases with the decrease of water temperature
d) does not change with temperature
e) none of the above
b) decreases with the increase of water temperature
Thermally separated layers in lakes are called
a) anticlines
b) inclines
c) temperature gradients
d) thermoclines
e) temperature layers
d) thermoclines
An effluent is
a) a substance that flows out of a process
b) always pollutant
c) smog
d) the result of weather inversion
e) caused by over production of flue gases
a) a substance that flows out of a process
Phosphates are a common chemical found in
a) groundwater
b) detergents
c) plant effluent
d) settling ponds
e) sludge
b) detergents
One pollutant that is particularly harmful to the earth's ozone layer is otherwise known as a) DOT's b) PVC's c) BOD's d) CFC's e) PCB's
d) CFC’s
The pH of industrial effluent can be controlled
a) by the addition of acid
b) by the addition of alkaline
c) by the addition of water
d) by the use of settling ponds
e) by the addition of acid or alkaline as required
e) by the addition of acid or alkaline as required
Coagulants are substances used to
a) control the pH of effluent water
b) remove dissolved solids from water
c) remove grease from water
d) remove small particles from water
e) remove phosphate and nitrates from water
d) remove small particles from water
Chemical emulsions can be removed by
a) settling
b) additives
c) centrifugal action
d) gravity
e) all of the above
e) all of the above
The best way to dispose of hazardous liquids is to
a) put them in a landfill
b) encase them and bury them underground
c) encase them and bury them at sea
d) incinerate them at high temperature
e) inject them down deep wells
d) incinerate them at high temperature
The rate at which a fluid progresses from a spilled area is governed by its a) pH b) density c) viscosity d) thickness e) weight
c) viscosity
Hazardous liquids should be handled according to information
supplied on
a) general safety reports
b) progress reports
c) Material Safety Data Sheets
d) plant operation manuals
e) Occupational Health and Safety Regulations
c) Material Safety Data Sheets
Water that exists in the soil and rock formation is known as
a) tap water
b) contaminated water
c) surface water
d) soil water
e) ground water
e) ground water
