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Green Chemistry and Nanochemistry

Maharashtra Board · Class 12 · Chemistry

Quick revision notes for Green Chemistry and Nanochemistry — Maharashtra Board Class 12 Chemistry. Key concepts, formulas, and definitions for last-minute revision.

43 questions24 flashcards5 concepts

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Key Topics to Revise

1

Green Chemistry Fundamentals

  • Green Chemistry is the use of chemistry for pollution prevention by environmentally conscious design of chemical products and processes
  • Coined by Paul T. Anastas, known as the 'Father of Green Chemistry'
  • Aims to maximize efficiency and minimize hazardous effects on human health and environment
2

Twelve Principles of Green Chemistry

  • 1. Prevention of Waste: Zero Waste Technology (ZWT) - waste from one process becomes raw material for another
  • 2. Atom Economy: Maximize incorporation of reactant atoms into final product
  • 3. Less Hazardous Synthesis: Use safer reaction pathways (BHC instead of DDT)
3

Introduction to Nanochemistry

  • Nanoscience: Study of phenomena and manipulation of materials at atomic, molecular scales where properties differ significantly from larger scales
  • Nanotechnology: Design, characterization, production and application of structures by controlling shape and size at nanometer scale
  • Nanomaterial: Material with structural components having at least one dimension in 1-100 nm range
4

Characteristic Features of Nanoparticles

  • Color Change: Gold appears red at nanoscale instead of yellow (100 gold atoms in cube)
  • High Surface-to-Volume Ratio: 1 m³ cube divided into 1 nm³ cubes increases surface area dramatically
  • Enhanced Catalytic Activity: More surface area provides more reaction sites (Pd, Pt nanoparticles for hydrogenation)

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Full Notes

Key Concepts

Green Chemistry is the useKey principles include% atom economy = (Formula weightNanomaterials have at least one dimensionWet chemical method involving

Frequently Asked Questions

What are the important topics in Green Chemistry and Nanochemistry for Maharashtra Board Class 12 Chemistry?
Green Chemistry and Nanochemistry covers several key topics that are frequently asked in Maharashtra Board 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 Green Chemistry and Nanochemistry — Maharashtra Board Class 12 Chemistry?
Understand the core concepts first, then work through the 43 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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