Question : Which among the following is used to dilute oxygen in the gas cylinders used by divers?
Option 1: Krypton
Option 2: Argon
Option 3: Helium
Option 4: Neon
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Correct Answer: Helium
Solution : The correct answer is Helium.
Air in oxygen cylinders used by the divers is diluted using Helium because Helium has lower solubility with oxygen even at increased pressures. Normal air contains a lot of Nitrogen, but it is soluble in oxygen at increased pressure under the sea. So to avoid this situation helium containing oxygen cylinders are used by the divers.
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Question : In addition to hydrogen, the other abundant element present on the Sun's surface is:
Option 1: Helium
Option 2: Neon
Option 3: Argon
Option 4: Oxygen
Question : Which among the following gases is used in the artificial ripening of fruits?
Option 1: Argon
Option 2: Freon
Option 4: Acetylene
Question : Which among the following gases is used as an anaesthetic in dental surgery?
Option 1: Nitrous oxide
Option 2: Radon
Option 4: Helium
Question : Which among the following instruments is used for measuring the humidity of the air or gas?
Option 1: Bolometer
Option 2: Hygrometer
Option 3: Hydrometer
Option 4: Altimeter
Question : Which among the following elements does not belong to the Halogens group?
Option 1: Astatine
Option 2: Helium
Option 3: Bromine
Option 4: Chlorine
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