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Air. — Science STD 8 — Question

Tamilnadu BoardEnglish MediumSTD 8ScienceAir.2 Marks
Question
Explain the uses of oxygen.
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Answer

Uses of oxygen:
  1. It is used as oxy – acetylene light for cutting and welding metals.
  2. It is used to remove carbon impurities from steel.
  3. Plants and animals use oxygen from the air for respiration.
  4. It is used to oxidize rocket fuel.
  5. It is used for artificial respiration by scuba divers, mountaineers, astronauts, patients etc.
  6. Mixed with powdered charcoal it is used as explosives.
  7. It is used in the synthesis of methanol and ammonia.

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