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प्र: A mixture of ethyl alcohol  and water can be seperated  by

  • 1
    evaporation
  • 2
    sublimation
  • 3
    using a seperating funnel
  • 4
    fractional distillation
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उत्तर : 4. "fractional distillation"
व्याख्या :

Answer: D) fractional distillation Explanation: Fractional distillation is the process of seperation of a mixture of two or more liquids into the different fractions, which differ fairly widely in their boiling points. The liquid with a lower boiling point will be vaporized first and hence would be the distillate (first fraction). Eg. Ethyl alcohol has a boiling point of 78.10C and water 1000C. When a mixture of these two liquids is heated, alcohol vaporizes first and is collected separately as the distillate.

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