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Physical and Chemical Changes — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7SciencePhysical and Chemical Changes1 Mark
MCQ
Which of the following is true?
  • A
    Rusting will take place in absence of water.
  • B
    Rusting will take place in absence of air.
  • C
    Rusting will not take place in presence of water and air.
  • ✓
    None of the above.
✓

Answer

Correct option: D.
None of the above.
Oxygen and water are the essential things required for rusting. Rusting will only take place in presence of water and air.

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