MCQ
The mixture used for artificial breathing by asthma patients:
  • A
    He and $\mathrm{H}_2
  • He and $\mathrm{O}_2$
  • C
    He and $\mathrm{N}_2$
  • D
    Ne and $\mathrm{O}_2$

Answer

Correct option: B.
He and $\mathrm{O}_2$
B. He and $\mathrm{O}_2$

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