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Separation of Substances — Science STD 6 — Question

CBSE BoardEnglish MediumSTD 6ScienceSeparation of Substances1 Mark
MCQ
John tried to separate sugar from its solution using the evaporation method. However, he was unsuccessful. Which of the following is the likely reason?
  • A
    There was insufficient sugar in the solution.
  • B
    He had forgotten to stir the solution during heating.
  • ✓
    The sugar had decomposed.
  • D
    The sugar had vaporized.
✓

Answer

Correct option: C.
The sugar had decomposed.
Sugar cannot be obtained from its solution by evaporation method as on heating, decomposition of sugar takes place. Sugar can be obtained from sugar solution by distillation.

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