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CBSE Class 9 Answered

Why 0°C can be solid as well as liquid ?
Asked by manasi_kulkarni3 | 21 Apr, 2018, 11:03: PM
answered-by-expert Expert Answer
Because zero degrees is both the freezing point of water and the melting point of ice. 
Answered by Sivanand Patnaik | 22 Apr, 2018, 09:30: 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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CBSE 9 - Chemistry
what is evapouration?
Asked by urvika.lahoti | 05 May, 2019, 10:03: AM
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CBSE 9 - Chemistry
Answer the following: (a) Temperature remains constant until the whole solid changes to liquid although heat energy is constantly supplied. Why? (b) Temperature remains constant during boiling although heat is constantly supplied. Why? (c) Ice has lower density than water. Why?  
Asked by Nimmi | 29 Jan, 2019, 03:15: PM
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CBSE 9 - Chemistry
difference between boiling and evaporation  
Asked by ps7232004 | 01 Oct, 2018, 09:15: PM
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CBSE 9 - Chemistry
Is alchohol volatile?  Give rason
Asked by Nimmi | 10 Jul, 2018, 09:29: PM
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CBSE 9 - Chemistry
i want 60 questions/answers in chapter Matter In Our Surrounding
Asked by editorsuragbureau | 28 Jun, 2018, 12:50: PM
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CBSE 9 - Chemistry
why an iron almirah is a solid at room temperature? State the characteristics of matter demonstrated by: a)Diffusion     b)Brownian motion Explain how the smell of food being cooked in kitchen reaches us even from considerable distance? Explain why diffusion occurs more quickly in gas than in liquids?
Asked by samaysahuji_0306 | 20 May, 2018, 03:33: PM
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CBSE 9 - Chemistry
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.
Asked by seeni2005 | 04 May, 2018, 02:34: PM
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CBSE 9 - Chemistry
Why 0°C can be solid as well as liquid ?
Asked by manasi_kulkarni3 | 21 Apr, 2018, 11:03: PM
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