Advertisements
Advertisements
प्रश्न
Account for the following:
Helium is used in diving apparatus.
Give reasons for the following :
Helium is used in diving apparatus as a diluent for oxygen.
Advertisements
उत्तर १
Helium mixed with oxygen under pressure is given to sea-divers for respiration. Air is not given to sea-divers because nitrogen present in air being soluble in blood will give a painful sensation called bends by bubbling out blood on moving from high pressure(in deep sea) to the atmospheric pressure.
उत्तर २
Air contains a large amount of nitrogen and the solubility of gases in liquids increases with increase in pressure. When sea divers dive deep into the sea, large amount of nitrogen dissolves in their blood. When they come back to the surface, solubility of nitrogen decreases and it separates from the blood and forms small air bubbles. This leads to a dangerous medical condition called bends. Therefore, air in oxygen cylinders used for diving is diluted with helium gas. This is done as He is sparingly less soluble in blood.
APPEARS IN
संबंधित प्रश्न
Which noble gas is used in filling balloons for meteorological observations?
Complete the equation : XeF2+PF5 →
Write the structures of the following molecule:
XeOF4
Complete the following equations : XeF4 + O2F2→
test q 1234
Why has it been difficult to study the chemistry of radon?
What inspired N. Bartlett for carrying out reaction between Xe and PtF6?
How are xenon fluorides XeF2, XeF4 and XeF6 obtained?
How are XeO3 and XeOF4 prepared?
Write electronic configuration and two uses of neon. (Z = 10)
Complete the following reactions : XeF6 + 3H2O →
Complete the following reactions:
XeF6+2H2O ----->
Write the electronic configuration of the following element:
Krypton (Z = 36)
Sulfur dioxide reacts with sodium hydroxide solution to form _______.
The number of lone pairs of electrons present in ClF5:
Partial hydrolysis of XeF4 gives ____________.
Helium is preferred to be used in balloons instead of hydrogen because it is ____________.
The order of increasing sizes of atomic radii among the elements O, S, Se and As is:
\[\ce{XeF6 + H2O ->[Partial][Hydrolysis] \underline{}\underline{}\underline{}\underline{} + \underline{}\underline{}\underline{}\underline{}}\]
