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Question
A steam at 100oC is slowly cooled and converted to ice at −10oC. Which of the following curves represents the phenomenon qualitatively?
A steam at 100oC is slowly cooled and converted to ice at −10oC. Which of the following curves represents the phenomenon qualitatively?
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Solution
The correct option is A
From the diagram it is clear that, from steam to water conversion it is condensation so steam at 100 to water at 100 we have latent heat, and from liquid i.e. water to ice at 0 we have latent heat again. In both the steps we have change of phase but no change in temperature. As the time passes the steam gets converted to water to ice. Remaining options depict the rise in temperature, so the correct option is chooice B.
From the diagram it is clear that, from steam to water conversion it is condensation so steam at 100 to water at 100 we have latent heat, and from liquid i.e. water to ice at 0 we have latent heat again. In both the steps we have change of phase but no change in temperature. As the time passes the steam gets converted to water to ice. Remaining options depict the rise in temperature, so the correct option is chooice B.
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