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10-1.Thermometry, Thermal Expansion and Calorimetry
hard
A closed bottle containing water at $30^{\circ} C$ is open on the surface of the moon. Then,
A
the water will boil
B
the water will come out as a spherical ball
C
the water will freeze
D
the water will decompose into hydrogen and oxygen
(KVPY-2015)
Solution
(a)
When bottle is opened on moon, the atmospheric pressure on water surface is zero. As a liquid boils when vapour pressure on the liquid surface is equal to the atmospheric pressure.
So, this condition met on moon even at $30^{\circ} C$. So, water starts to boil as soon as water bottle is opened.
Standard 11
Physics
Similar Questions
Values for latent heat in Column$-\,I$ and its values are given in Column$-\,II$. Match the followings :
| Column $-\,I$ | Column $-\,II$ |
| $(a)$ Latent heat of vaporization $L_V$ | $(i)$ $22.6\, \times \,{10^5}\,J\,/kg$ |
| $(b)$ Latent heat of fusion $L_f$ | $(ii)$ $33.3\, \times \,{10^5}\,J\,/kg$ |
| $(iii)$ $3.33\, \times \,{10^5}\,J\,/kg$ |
easy
