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RRB Group D Model Paper 2 with solutions
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© examsnet.com
Question : 25
Total: 100
The inert gas which is substituted for nitrogen in the airland used by deep sea divers for breathing is___________.
krypton
argon
helium
xenon
Validate
Solution:
(3) In deep sea diving, divers use a mixture of three gases namely oxygen, nitrogen and helium. A mixture of helium and oxygen is known as Heliox, which has 0% nitrogen content and is used as a breathing gas by deep sea divers.
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