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Changes Around Us — Science STD 6 — Question

CBSE BoardEnglish MediumSTD 6ScienceChanges Around Us1 Mark
MCQ
Which of the following is a periodic change?
  • A
    Change of season.
  • B
    Phases of moon.
  • C
    Beating of human heart.
  • ✓
    All of these.
✓

Answer

Correct option: D.
All of these.
All these changes are periodic as they occur after regular intervals of time.

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