Which is used in modern diving apparatus?

Is used in diving apparatus?

Answer: Because of its low solubility (as compared to N2) in blood, a mixture of oxygen and helium is used in diving apparatus used by deep sea divers.

Why is helium used in modern diving apparatus?

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. … This is done as He is sparingly less soluble in blood.

Which gas is used as diluent for oxygen in modern diving apparatus?

(iii) Helium is used in diving apparatus as a diluent for oxygen because it is chemically inert and does not participate in the chemical reaction. Helium has low solubility in water than many other gases, such as nitrogen.

Why nitrogen is used in diving apparatus?

If the concentration of oxygen is too lean the diver may lose consciousness due to hypoxia and if it is too rich the diver may suffer oxygen toxicity. The concentration of inert gases, such as nitrogen and helium, are planned and checked to avoid nitrogen narcosis and decompression sickness.

Why helium is used in oxygen cylinder?

The main reason for adding helium to the breathing mix is to reduce the proportions of nitrogen and oxygen below those of air, to allow the gas mix to be breathed safely on deep dives. … Helium has very little narcotic effect. A lower proportion of oxygen reduces the risk of oxygen toxicity on deep dives.

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What is Bend?

The Bends is an illness that arises from the rapid release of nitrogen gas from the bloodstream and is caused by bubbles forming in the blood and other tissues when a diver ascends to the surface of the ocean too rapidly. It is also referred to as Caisson sickness, decompression sickness (DCS), and Divers’ Disease.

Is helium lighter than hydrogen?

Helium has a molecular weight of 4 and, like hydrogen is lighter than air. While helium is not as light as hydrogen, it is inert and non-flammable (unlike hydrogen, which is highly flammable). For this reason, helium is used to inflate party and meteorological balloons as they will rise in air.

What is bend in chemistry class 12?

Bends is a medical condition which blocks the blood capillaries due to formation of bubbles of nitrogen in blood. Bends is very painful and dangerous to life. When scuba divers come towards the surface of water they have to face bends.