A closed bottle containing water at 30°C is carried to the moon i
A closed bottle containing water at 30°C is carried to the moon in a space-ship. If it is placed on the surface of the moon, what will happen to the water as soon as the lid is opened
A. <span style="font-family:roboto,helvetica,arial,sans-serif">Water will boil</span>
B. <span style="font-family:roboto,helvetica,arial,sans-serif">Water will freeze</span>
C. <span style="font-family:roboto,helvetica,arial,sans-serif">Nothing will happen on it</span>
D. <span style="font-family:roboto,helvetica,arial,sans-serif"> </span>It will decompose into H<sub>2</sub> and O<sub>2</sub>
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Right Answer is: A
SOLUTION
Boiling occurs when the vapour pressure of liquid becomes equal to the atmospheric pressure. At the surface of moon, atmospheric pressure is zero, hence boiling point decreases and water begins to boil at 30°C.
So when the bottle is opened, it'll immediately begin to boil, as there's no pressure in the surrounding.