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Mineral Nutrition — BIO BOTANY STD 11 — Question

Tamilnadu BoardEnglish MediumSTD 11BIO BOTANYMineral Nutrition1 Mark
MCQ
Lichens are the indicators of:
  • A
    carbon monoxide
  • B
    nitrogen oxide
  • ✓
    sulphur di oxide
  • D
    hydrogen sulphide
✓

Answer

Correct option: C.
sulphur di oxide
sulphur di oxide

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