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Changes Around Us: Physical and Chemical — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceChanges Around Us: Physical and Chemical1 Mark
MCQ
When you blow air into lime water, it turns milky. What does this indicate?
  • A
    The presence of oxygen
  • ✓
    The presence of carbon dioxide
  • C
    A physical change
  • D
    The presence of hydrogen
✓

Answer

Correct option: B.
The presence of carbon dioxide
B

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