CBSE Class 9 Chemistry Types Of Changes
- How is fire extinguisher at airports and petrol pump
- The latent heat of vaporisation of water at 100degree Celsius is 540,find entropy increase when one mole of water at 100deg.cel is evaporate.
- Liquids generally have low density as compared to solids,but ice floats on water.why?
- What is dry ice? How is it prepared?
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