Helium is added to the oxygen supply of deep sea divers because it is
A. Less poisonous than nitrogen
B. Lighter than nitrogen
C. Readily miscible with oxygen
D. Less soluble in blood than nitrogen at high pressure
Answer: Option D
Solution(By Examveda Team)
Deep-sea divers have their oxygen supply mixed with helium in order to avoid the toxic nature of oxygen under extreme pressures. The Helium atom is much smaller than the Nitrogen molecule, has a smaller electron cloud and is less polarizable. It, therefore, is less soluble in blood than nitrogen and prevents the formation of nitrogen bubbles in blood which blocks blood flow as the diver comes to the surface of the sea from underwater.Related Questions on Chemistry
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C. Dry farming
D. Monsoon
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A. electrons and neutrons
B. electrons and protons
C. protons and neutrons
D. All of the above
The number of moles of solute present in 1 kg of a solvent is called its
A. molality
B. molarity
C. normality
D. formality
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