Oxygen for medical use
(a)
is prepared by the fractional distillation of air
(b)
for pipelines contains 0.3% nitrogen
(c)
forms an inflammable mixture with oil
(d)
from concentrators provides an FiO2
of over 80%
(e)
has similar magnetic properties to nitrous oxide
(a) true (b)
false (c)
true (d)
true (e)
false
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