Environmental Studies MCQ Quiz

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Questions and Answers

Which of the following best defines eutrophication?

Thermal change in water
Filling up of water body with aquatic due to extra nourishment (correct)
Solid waste
None of the above

What does biochemical oxygen demand (BOD) mean?

Industrial pollution
Air pollution
Polluting capacity of effluent
Dissolved O2 needed by microbes to decompose organic waste (correct)

Which of the following is the main component of photochemical smog?

Water vapour
Sulphur dioxide
Oxides of nitrogen (correct)
All of the above

How does deforestation generally affect rainfall?

<p>Decreases rainfall (C)</p> Signup and view all the answers

What does the term 'Alpha diversity' refer to?

<p>Biodiversity within a specific habitat (C)</p> Signup and view all the answers

Flashcards

Eutrophication

Water body enrichment with excessive nutrients.

Biochemical Oxygen Demand (BOD)

Oxygen needed to decompose organic waste by microbes

Photochemical smog component

Nitrogen oxides are major components.

Deforestation and rainfall

Deforestation reduces rainfall.

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Alpha diversity

Biodiversity within a specific habitat.

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Study Notes

Eutrophication

Eutrophication is the process of excessive nutrient accumulation in water bodies, leading to overgrowth of aquatic plants and depletion of oxygen, causing harm to aquatic life.

Biochemical Oxygen Demand (BOD)

Biochemical Oxygen Demand (BOD) is the amount of dissolved oxygen needed by microorganisms to break down organic matter in water.

Photochemical Smog

The main component of photochemical smog is ground-level ozone, a toxic gas formed through the reaction of sunlight, nitrogen oxides, and volatile organic compounds.

Deforestation and Rainfall

Deforestation generally decreases rainfall, as forests absorb and recycle water, and their removal disrupts the water cycle, leading to reduced precipitation.

Alpha Diversity

Alpha diversity refers to the variety of different species within a particular community or ecosystem, measuring the richness of species in a specific area.

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Description

Test your knowledge on Environmental Studies with this model MCQ quiz. Answer questions on topics like eutrophication, biodiversity, and sustainable development. Each question carries 2 marks, so make sure to choose the correct alternative for maximum score.