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Air. — Science STD 8 — Question

Tamilnadu BoardEnglish MediumSTD 8ScienceAir.1 Mark
MCQ
…………… is necessary for all acids.
  • A
    Nitrogen
  • B
    $CO _2$
  • ✓
    Oxygen
  • D
    Hydrogen
✓

Answer

Correct option: C.
Oxygen
Oxygen

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