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Revision Notes

Some Analytical Techniques

Maharashtra Board · Class 11 · Chemistry

Quick revision notes for Some Analytical Techniques — Maharashtra Board Class 11 Chemistry. Key concepts, formulas, and definitions for last-minute revision.

44 questions24 flashcards5 concepts

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Key Topics to Revise

1

Purification of Solids

  • Two types of impurities exist: (1) Soluble in same solvent as main substance, (2) Insoluble in same solvent
  • Filtration separates insoluble impurities - residue remains on filter paper, filtrate passes through
  • Filtration under suction is faster and more efficient using Buchner funnel and vacuum pump
2

Distillation Techniques

  • Simple distillation separates volatile liquids from non-volatile impurities or liquids with large boiling point differences (>25°C)
  • Thermometer bulb must be just below side arm to measure vapor temperature accurately
  • Fractional distillation uses fractionating column to separate liquids with small boiling point differences
3

Solvent Extraction

  • Based on differential solubility of substance in two immiscible liquids
  • Organic substance extracted from aqueous solution using immiscible organic solvent
  • Solute distributes between two phases according to its relative solubility
4

Chromatographic Techniques

  • Based on differential distribution of components between stationary and mobile phases
  • Adsorption chromatography: separation by differential adsorption on solid stationary phase
  • Partition chromatography: separation by differential partitioning between two liquid phases

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Full Notes

Key Concepts

A basic separation technique usedA fourSeparates two or more soluble substancesSeparates volatile liquids from nonUsed when boiling point difference

Frequently Asked Questions

What are the important topics in Some Analytical Techniques for Maharashtra Board Class 11 Chemistry?
Some Analytical Techniques covers several key topics that are frequently asked in Maharashtra Board Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Some Analytical Techniques — Maharashtra Board Class 11 Chemistry?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision 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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