alka was making a tea in kettle. suddenly she felt intense heat from the puff of steam gushing out of the spout of the kettle. she wondered whether the temperature of the steam was higher than that of the water boiling in the kettle. comment
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Answer:
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It is because, when water changes into steam, it absorbs latent heat of vaporisation, but when steam condenses to form water, an equal amount of latent heat is given out without changing the temperature. Hence, she felt intense heat from puff of steam gushing out of the spout of the kettle.
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Answer:
Temperature of the steam is greater than that of the tea boiling.
Explanation:
As the increase of temperature occurs there is change of the state of matter from solid to liquid and then to gas. Boiling tea contains hidden heat for the conversion of liquid to gas .Whereas steam is the form in which heat is not hidden but is used in having more Kinetic energy.
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