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Is Matter Around Us Pure ? — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceIs Matter Around Us Pure ?1 Mark
MCQ
Which of the following substance cannot be broken down by a chemical method?
  • A
    Ammonia (NH3)
  • B
    Helium (He)
  • C
    Methane (CH4)
  • D
    Water (H2O)
✓

Answer

  1. Helium (He)

Explanation:

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