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A bottle of water at 0° C is opened on the surface of moon. This of the following correctly expresses the behaviour of water in it. (A) it will freeze. (B) it will decompose into H2 and O2. (C) It will boil. (D) none of the above. |
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Answer» Answer is (C) It will boil. The atmospheric pressure on the moon is very small. Due to this water in bottle will start boiling as soon as lid is opened. It is because a liquid starts boiling when its vapour pressure becomes equal to atmospheric pressure. |
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