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CBSE Class 9 Answered

Why does our palm feel cold when we put some perfume on it
Asked by Ay033857 | 07 Jul, 2019, 09:12: PM
answered-by-expert Expert Answer
Perfume is a low boiling liquid.
When put on palm it absorbs heat energy from the body and evaporates.
Due to this our palm feels cooling effect.
Answered by Varsha | 07 Jul, 2019, 10:34: PM
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CBSE 9 - Chemistry
How does evapration cause cooling. Explain with an example  
Asked by Cyriac | 25 Aug, 2019, 10:09: PM
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CBSE 9 - Chemistry
Why does our palm feel cold when we put some perfume on it
Asked by Ay033857 | 07 Jul, 2019, 09:12: PM
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Asked by urvika.lahoti | 05 May, 2019, 10:03: AM
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Asked by Nimmi | 29 Jan, 2019, 03:15: PM
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Which statement regarding the effect of humidity on evaporation is correct? Humidity has no effect on evaporation. With the increase in humidity, rate of evaporation decreases. With the decrease in humidity, rate of evaporation decreases. Humidity sometimes increases and sometimes decreases the rate of evaporation. pls explain.
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Why 0°C can be solid as well as liquid ?
Asked by manasi_kulkarni3 | 21 Apr, 2018, 11:03: PM
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