IGCSE O Level Biology MCQs – Practice Test for Exam Prep

Pollution BOD and Eutrophication Multiple Choice Questions with Answers – PDF Download

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Pollution BOD and Eutrophication MCQs PDF Download – Prep Test

MCQ 1: The higher the BOD, the:

lower the water pollution
lesser the bacteria in it
more the water pollution
the more the air pollution

MCQ 2: Narrow tolerance of oxygen (O₂) is found in:

humans
plants
mammals
fish

MCQ 3: BOD measures the amount of:

bacteria in a given sample of water
algae being decomposed in a given sample
oxygen bacteria need to decompose organic matter in a given sample
oxygen bacteria need to decompose organic matter in a given sample in a fixed period of time

MCQ 4: The word BOD refers to the:

Bidding of Dermatology
Binding of Dirt
Biochemical occupied Date
Biochemical Oxygen demand

MCQ 5: Fish die as a result of water pollution due to:

less BOD
more tolerance range for oxygen
narrow tolerance range for oxygen
zero tolerance range for oxygen

IGCSE O Level Biology MCQs App & e-Book – Pollution: BOD and Eutrophication Practice Tests

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