Question : The gas which turn into liquid at the lowest temperature among the following is
Option 1: Hydrogen
Option 2: Oxygen
Option 3: Helium
Option 4: Nitrogen
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Correct Answer: Hydrogen
Solution : The correct option is Hydrogen.
In comparison to most other gases, hydrogen does definitely change into a liquid at relatively low temperatures. At typical atmospheric pressure, its boiling point is approximately -252.9 degrees Celsius (-423.2 degrees Fahrenheit). Because of its extraordinarily low boiling point, hydrogen is one of the coldest liquids on the planet. In contrast, gases with higher boiling points, such as oxygen, nitrogen, and helium, stay gaseous at considerably greater temperatures.
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Question : Which of the following is an inert gas?
Option 2: Nitrogen
Option 3: Oxygen
Option 4: Argon
Question : The gas used for filling weather balloons is
Option 1: Helium
Option 2: Hydrogen
Option 3: Air
Question : Absolute zero is defined as:
Option 1: the temperature at which all molecular motion ceases.
Option 2: at which water boils at 298K.
Option 3: at which liquid helium boils.
Option 4: at which the volume becomes zero.
Question : Helium is added to the oxygen supply of deep-sea divers because it is
Option 1: less poisonous than nitrogen
Option 2: lighter than nitrogen
Option 3: readily miscible with oxygen
Option 4: less soluble in blood than Nitrogen at high-pressure
Question : The major constituent of air is
Option 1: Nitrogen
Option 2: Carbon dioxide
Option 4: Hydrogen
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