TRUE: Fractional distillation is used to separate two or more liquids, Viscosity increases as chain length increases, Shorter chain hydrocarbons are easier to burn, Pentane has a lower viscosity than decane, Distillation is used to separate two or more liquids, FALSE: The column will be coolest at the bottom, Boiling point decreases as chain length increases, The longer the chain, the more volatile the hydrocarbon,  Hydrocarbons condense in different fractions depending on their melting points,

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