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Standard VII

Chemistry

Inert Gas and Their Uses

Sea divers us...

Question

Sea divers use a mixture of:

O_{2}, N_{2}

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O_{2}, H_{2}

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O_{2}, H e

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N_{2}, H_{2}

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Solution

The correct option is D $O_{2}, H e$
Sea divers use a mixture of $O_{2}$ and $H e$ , this mixture is called Heliox.

Heliox is a mixture of helium and oxygen used by technical divers on very deep/long decompression dives. It is not used by recreational divers.

Hence, option C is correct.

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Similar questions

Q. Deep sea divers use

(O_{2} + H e)

mixture in preference to

(O_{2} + N_{2})

mixture. This is because :

Q. Deep sea divers use

(O_{2} + H e)

mixture as preference to

(O_{2} + N_{2})

mixture. This is because:

Q. At

S T P

the order of mean square velocity of molecules of

H_{2}, N_{2}, O_{2}

and

H B r

is-

Q. Gases

H_{2} H e O_{2} N_{2}

Critical temperature(K) 33.2 5.3 154.3 126

From the above data what whould be the order of liquefaction of these gases?
Start writing the order from the gas liquefying first.

Gases posses charcteristic critical temperature which depends upo the magnitude of intermolecular forces between the particles. Following are the critical temperatures of some gases.

$\begin{matrix} G a s e s & H_{2} & H e & O_{2} & N_{2} C r i t i c a l t e m p e r a t u r e i n K e l v i n & 33.2 & 5.3 & 154.3 & 126 \end{matrix}$

From the above data what would be the order of liquefaction of these gases? Start writing the order from the gas liquefying first

(a) $H_{2}, H e, O_{2}, N_{2}$ (b) $H e, O_{2}, H_{2}, N_{2}$

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Sea divers use a mixture of:

The correct option is D O2,HeSea divers use a mixture of O2 and He, this mixture is called Heliox. Heliox is a mixture of helium and oxygen used by technical divers on very deep/long decompression dives. It is not used by recreational divers.Hence, option C is correct.

The correct option is D $O_{2}, H e$
Sea divers use a mixture of $O_{2}$ and $H e$ , this mixture is called Heliox.

Heliox is a mixture of helium and oxygen used by technical divers on very deep/long decompression dives. It is not used by recreational divers.

Hence, option C is correct.