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MCB Final Exam Questions and Answers 100% Solved | Rated A+
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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? - Sedimenta...

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  • October 22, 2024
  • 17
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • mcb

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  • MCB
  • MCB

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©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.

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

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