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Hygiene - [A Key to Healthy Life] — BIOLOGY STD 9 — Question

ICSE BoardEnglish MediumSTD 9BIOLOGYHygiene - [A Key to Healthy Life]1 Mark
MCQ
The chemical substance mainly responsible for tooth disorders is
  • A
    Calcium
  • B
    Chloride
  • ✓
    Fluorides
  • D
    Iodides
✓

Answer

Correct option: C.
Fluorides

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