Question 2How are sol, solution and suspension different from each other?

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AttributesSolSolutionSuspensionType of mixtureHeterogeneousHomogeneousHeterogeneousTyndall effectExhibitedNot exhibitedMay or may not be exhibitedAppearanceUsually glassy and clearUnclouded and clearCloudy and opaqueVisibilityVisible with an ultramicroscopeNot visibleVisible with the naked eyeDiffusionDiffuses very slowlyDiffuses rapidlyDo not diffuseStabilityPretty stableHighly stableUnstableSettlingGet settled in centrifugationDo not settleSettle on their ownExampleMilk, blood, smokeSalt solution, sugar solutionSand in water, dusty air

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  Science | Chapter 2: Is Matter Around Us PureWeb Content &mdash; Quick Reference
  
    Chapter 2: Is Matter Around Us Pure &mdash; Quick Reference

mixtures
      solutions
      colloids
      suspensions
      separation techniques
      elements
      compounds
      Tyndall effect

Quick Revision Points
      
        Pure substances: fixed composition (elements + compounds). Mixtures: variable composition
Solution ( 100 nm, settles)
Concentration = (mass of solute / mass of solution) × 100
Separation: evaporation, centrifugation, chromatography, distillation, sublimation, crystallisation, separating funnel
Elements: metals, non-metals, metalloids. Compounds: fixed ratio, chemical separation
Tyndall effect: scattering of light by colloidal particles (milk, fog, smoke)

Exam Tips for Chapter 2
      
        Read the detailed chapter notes for complete coverage of all NCERT topics.
        Practice all NCERT in-text and back exercise questions &mdash; they are frequently asked in exams.
        Focus on comparison tables, diagrams, and definitions &mdash; these are high-scoring areas.
        For numericals (if applicable), practice at least 20 problems of varying difficulty.
        Refer to the practice question bank (200+ questions) for thorough preparation.

Related Resources
      
        Detailed Notes: ch02-is-matter-around-us-pure.html
        Practice Questions: 100+ questions with answers in 05-practice-questions/
        Chapter Test: 30-mark test paper in 06-tests/chapter-tests-30marks/
        Formula Sheet: Complete formula reference in 03-teacher-aid/formula-sheet.html

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Is Matter Around Us Pure — Question 2

Question 2

Chapter 2: Is Matter Around Us Pure — Quick Reference

Quick Revision Points

Attributes	Sol	Solution	Suspension
Type of mixture	Heterogeneous	Homogeneous	Heterogeneous
Tyndall effect	Exhibited	Not exhibited	May or may not be exhibited
Appearance	Usually glassy and clear	Unclouded and clear	Cloudy and opaque
Visibility	Visible with an ultramicroscope	Not visible	Visible with the naked eye
Diffusion	Diffuses very slowly	Diffuses rapidly	Do not diffuse
Stability	Pretty stable	Highly stable	Unstable
Settling	Get settled in centrifugation	Do not settle	Settle on their own
Example	Milk, blood, smoke	Salt solution, sugar solution	Sand in water, dusty air