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Bioremediation

CBSE · Class 12 · Biotechnology

Step-by-step guide to study Bioremediation in CBSE Class 12 Biotechnology. Topics to cover, practice strategy, and time allocation.

61 questions84 flashcards5 concepts

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A comprehensive flowchart illustrating the primary and secondary (biological) treatment stages of a sewage treatment plant, including key components and processes like filtration, sedimentation, aerat
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Study Plan

1
Day 1–2

Learn the Theory

Read the textbook chapter carefully. Note down definitions, formulas, and key concepts.

2
Day 3

Practice Problems

Solve textbook exercises and additional practice questions. There are 61 questions available for this chapter.

3
Day 4

Revise & Test

Revise key formulas and concepts without looking at notes. Take a practice quiz to test your understanding. Mark weak areas for re-revision.

4
Day 7

Spaced Revision

Revisit Bioremediation after a week. Use flashcards for quick recall. Solve previous year questions from this chapter.

What to Focus On

  • Bioremediation uses living organisms to remove or reduce pollutants.
  • Microorganisms and plants are the main agents of bioremediation.
  • It is used for sewage, solid waste, biomedical waste, oil sludge, and pesticides.

  • Sewage is wastewater from homes, communities, and industries.
  • Municipal sewage is about 99% water and 1% suspended and soluble matter.
  • BOD shows the amount of oxygen needed to stabilise organic matter.

  • Primary treatment is physical or mechanical.
  • It includes screening, grit chamber use, and sedimentation.
  • Sedimentation tanks hold sewage for 2 to 10 hours.

Common Mistakes to Avoid

Bioremediation means cleaning waste only with chemicals or machines.

Activated sludge comes from primary treatment and is the sludge removed from the first settling tank.

Secondary treatment makes sewage completely safe for drinking water.

Memory Tips

Meaning of bioremediation

Wastewater treatment stages

Primary treatment

Activated sludge process

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Frequently Asked Questions

What are the important topics in Bioremediation for CBSE Class 12 Biotechnology?
Bioremediation covers several key topics that are frequently asked in CBSE Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Bioremediation — CBSE Class 12 Biotechnology?
Understand the core concepts first, then work through the 61 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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