Practice Microbes in Sewage Treatment - 8.3 | 8. MICROBES IN HUMAN WELFARE | CBSE Grade-12 Biology
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Microbes in Sewage Treatment

8.3 - Microbes in Sewage Treatment

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is sewage?

💡 Hint: Think about what types of waste water need treatment.

Question 2 Easy

What does BOD stand for?

💡 Hint: Reflect on its role in measuring water cleanliness.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the first stage of sewage treatment?

Aerobic Treatment
Primary Treatment
Secondary Treatment

💡 Hint: Think about the steps before biological treatment.

Question 2

True or False: BOD measures the oxygen needed by microbes to decompose organic matter.

True
False

💡 Hint: Remember what BOD stands for.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Analyze how improving BOD levels in wastewater from a sewage treatment plant affects local aquatic life.

💡 Hint: Think about the balance of oxygen levels and its impact on aquatic organisms.

Challenge 2 Hard

Propose potential community initiatives to reduce sewage output based on urbanization trends.

💡 Hint: Consider both behavioral changes and policy impacts.

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Reference links

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