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Revision Notes

Noise and Soil Pollution

Telangana Open School (TOSS) · Class 12 · Chemistry

Quick revision notes for Noise and Soil Pollution — Telangana Open School (TOSS) Class 12 Chemistry. Key concepts, formulas, and definitions for last-minute revision.

46 questions30 flashcards3 concepts

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Key Topics to Revise

1

Noise Pollution

  • Noise is any unwanted sound that causes discomfort or harm.
  • It is measured in decibels (dB).
  • Noise pollution is defined as unwanted noise exceeding 65 dB.
2

Soil Pollution

  • Soil pollution refers to the contamination of soil by harmful substances like pesticides, heavy metals, and plastics.
  • It alters the natural composition of soil and affects plant growth and human health.
  • Sources include agricultural chemicals, industrial waste, mining, oil spills, sewage, and non-biodegradable plastics.
3

Green Chemistry

  • Green Chemistry aims to design chemical processes that reduce or eliminate hazardous substances.
  • It focuses on preventing pollution at the source rather than managing waste later.
  • Twelve principles guide green chemistry, including waste prevention, atom economy, and safer solvents.

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Full Notes

Key Concepts

Unwanted sound above 65 decibels (dB)Soil pollution occurs when harmful substancesGreen Chemistry is a scientific approach

Frequently Asked Questions

What are the important topics in Noise and Soil Pollution for Telangana Open School (TOSS) Class 12 Chemistry?
Noise and Soil Pollution covers several key topics that are frequently asked in Telangana Open School (TOSS) 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 Noise and Soil Pollution — Telangana Open School (TOSS) Class 12 Chemistry?
Understand the core concepts first, then work through the 46 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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