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Elements and Compounds — CHEMISTRY STD 7 — Question

ICSE BoardEnglish MediumSTD 7CHEMISTRYElements and Compounds1 Mark
MCQ
Which among the following shows variable valency ?
  • A
    Zinc
  • B
    Sodium
  • ✓
    Iron
  • D
    Calcium
✓

Answer

Correct option: C.
Iron
Iron

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