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MCB Final Exam Questions and Answers
100% Solved | Rated A+
Using microbes to break down or remove toxic wastes in water and soil is
called - ✔✔bioremediation
The breakdown of man-made compounds by decomposers is called -
✔✔biodegradation
Which is the first step in water purification? - ✔✔Sedimentation
In which step of water purification does water move through sand beds and
activated charcoal? - ✔✔filtration
Primary sewage treatment includes - ✔✔skimming
The final step of sewage treatment before release into the environment is -
✔✔chlorination
What chemical is used in both water purification and sewage treatment to
give long-term disinfection? - ✔✔chlorine
,©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
An infectious disease typically seen among animals that may be acquired
by humans is referred to as - ✔✔zoonotic
What two strategies are used in the United States to ensure potable
drinking water? - ✔✔Filtration and chlorination
One of the goals of wastewater treatment is to __________ the biological
oxygen demand (BOD) - ✔✔decrease
The primary phase of waste water treatment _______________ -
✔✔separates solid from liquid wastes
The secondary phase of wastewater treatment is largely - ✔✔biological
The primary phase of wastewater treatment is largely - ✔✔physical
Use of a trickling filter that sprays wastewater over rocks coated with
biofilms which aerobically degrade organic matter is an example of the
____________ - ✔✔secondary phase of wastewater treatment
The activated sludge step in wastewater treatment is an example of the
__________________________ - ✔✔tertiary phase of wastewater
treatment
Which of the following may be removed by tertiary water treatment? -
✔✔All of the choices are correct
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
Agricultural water run-off, rich in nitrates, ammonia, and phosphates, may
be treated to remove these chemicals so that the treated water does not
support algal blooms. Such treatment is an example of
_________________. - ✔✔tertiary treatment
Which wastewater treatment process can generate methane which to be
used as a fuel? - ✔✔Anaerobic digestors
Backyard composting in either a pile or a bin is generally an
_______________ process. - ✔✔aerobic
The decomposition that occurs in a sanitary landfill is largely _________ -
✔✔anaerobic
Which term is used to describe a novel, chemically synthesized compound
that does not occur naturally but can be made to be biodegradable? -
✔✔Xenobiotic
Which of the following has been chemically modified to make it
biodegradable? - ✔✔Laundry detergent
Which of the following activities/processes depends upon the activities of
microbes? - ✔✔All of the choices are correct
MCB Final Exam Questions and Answers
100% Solved | Rated A+
Using microbes to break down or remove toxic wastes in water and soil is
called - ✔✔bioremediation
The breakdown of man-made compounds by decomposers is called -
✔✔biodegradation
Which is the first step in water purification? - ✔✔Sedimentation
In which step of water purification does water move through sand beds and
activated charcoal? - ✔✔filtration
Primary sewage treatment includes - ✔✔skimming
The final step of sewage treatment before release into the environment is -
✔✔chlorination
What chemical is used in both water purification and sewage treatment to
give long-term disinfection? - ✔✔chlorine
,©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
An infectious disease typically seen among animals that may be acquired
by humans is referred to as - ✔✔zoonotic
What two strategies are used in the United States to ensure potable
drinking water? - ✔✔Filtration and chlorination
One of the goals of wastewater treatment is to __________ the biological
oxygen demand (BOD) - ✔✔decrease
The primary phase of waste water treatment _______________ -
✔✔separates solid from liquid wastes
The secondary phase of wastewater treatment is largely - ✔✔biological
The primary phase of wastewater treatment is largely - ✔✔physical
Use of a trickling filter that sprays wastewater over rocks coated with
biofilms which aerobically degrade organic matter is an example of the
____________ - ✔✔secondary phase of wastewater treatment
The activated sludge step in wastewater treatment is an example of the
__________________________ - ✔✔tertiary phase of wastewater
treatment
Which of the following may be removed by tertiary water treatment? -
✔✔All of the choices are correct
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
Agricultural water run-off, rich in nitrates, ammonia, and phosphates, may
be treated to remove these chemicals so that the treated water does not
support algal blooms. Such treatment is an example of
_________________. - ✔✔tertiary treatment
Which wastewater treatment process can generate methane which to be
used as a fuel? - ✔✔Anaerobic digestors
Backyard composting in either a pile or a bin is generally an
_______________ process. - ✔✔aerobic
The decomposition that occurs in a sanitary landfill is largely _________ -
✔✔anaerobic
Which term is used to describe a novel, chemically synthesized compound
that does not occur naturally but can be made to be biodegradable? -
✔✔Xenobiotic
Which of the following has been chemically modified to make it
biodegradable? - ✔✔Laundry detergent
Which of the following activities/processes depends upon the activities of
microbes? - ✔✔All of the choices are correct
