IGCSE O Level Biology MCQs – Practice Test for Exam Prep

Pollution Sewage as Cause Multiple Choice Questions with Answers – PDF Download

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Pollution Sewage as Cause MCQs PDF Download – Prep Test

MCQ 1: In ecosystem, Endemics include:

malaria
plague
cholera
typhoid

MCQ 2: Bacteria grow and multiply rapidly in:

aerobic environment
anaerobic environment
water
soil

MCQ 3: An excellent habitat for bacterial growth is:

chlorofluorocarbons based products
burning of garbage
untreated sewage
all of above

MCQ 4: Untreated sewage may cause:

outbreak of epidemic
cholera outbreaks
typhoid outbreaks
all of above

MCQ 5: Hydrogen sulfide (H₂S) and ammonia (NH₃) are produced from:

the chimneys of factories
use of chlorofluorocarbon in foam packaging
decomposition of organic compounds by anaerobic bacteria
treatment of acidic wastes with alkalis

IGCSE O Level Biology MCQs App & e-Book – Pollution: Sewage as Cause Practice Tests

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