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Chemical Properties of Noble Gases

In modern div...

Question

In modern diving apparatus, a mixture of $H e$ and $O_{2}$ is used. Why ?

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Solution

Under high pressure, helium is less soluble in the blood than nitrogen. Hence, in modern diving apparatus, a mixture of $H e$ and $O_{2}$ is used instead of air.

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Similar questions

Why is helium used in diving apparatus?

Q. Assertion :Helium is used in diving apparatus. Reason: Solubility of helium is less in blood.

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Q. A certain volume of

H_{2}

effuses from an apparatus in one minute. The same volume of ozonized oxygen

(O_{3} + O_{2})

mixture took 246 seconds to effuse from apparatus under identical conditions. Percentage of

O_{2}

by mole in mixture is:

Q. A certain volume of

H_{2}

effuses from an apparatus in one minute. The same volume of ozonised oxygen (

O_{3}

O_{2}

) mixture took 246 sec. to effuse from apparatus under identical conditions percentage of

O_{2}

by mole in mixture is :

Q. Assertion : A mixture of

H e

O_{2}

is used for respiration for deep sea divers.
Reason: He is soluble in blood.

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