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swati

swati

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Author: swati nigam
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•Explain, with illustrative examples, why pure substances are needed.
•Describe methods of separation and purification for the components of solid-solid, solid-liquid and liquid-liquid (miscible) mixtures.
•Describe techniques for separation and purification including use of a suitable solvent, filtration, crystallisation, simple distillation, fractional distillation and paper chromatography.
 


•Describe paper chromatography and interpret chromatograms.
•Deduce from the given melting point and boiling point, the identities of substances and their purity.
 

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