GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is
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Helium
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Xenon
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Argon
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Krypton
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Explanation:
Detailed explanation-1: -Helium is substituted for nitrogen in the air used by deep sea divers for breathing because Helium is sparingly less soluble in blood, unlike Nitrogen which is more soluble in blood.
Detailed explanation-2: -So, they must be filled with non-reactive gas like nitrogen. We can use inert gases like argon or helium instead of Nitrogen, but they are more expensive & rarer than nitrogen.
Detailed explanation-3: -Q. Why helium is used for respiration in deep water instead of nitrogen? Notes: Air contains a large amount of nitrogen and the solubility of gases in liquids increases with increase in pressure. Therefore, air in oxygen cylinders used for diving is diluted with helium gas.
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