a. O2 and N 2 O
b.O2 and He
c.O2 and NH 2
d. O2 and CO
Ans. b
Explanation : a mixture of O2 and He is used for respiration as helium is inert and light gas and diffuse rapidly
(11)
5/5 - (1 vote)
a. O2 and N 2 O
b.O2 and He
c.O2 and NH 2
d. O2 and CO
Ans. b
Explanation : a mixture of O2 and He is used for respiration as helium is inert and light gas and diffuse rapidly
(11)
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