Steam produces more severe burns than boiling water. This is because steam has more energy than boiling water, present in it in the form of latent heat of vaporization. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/
Steam produces more severe burns than boiling water. This is because steam has more energy than boiling water, present in it in the form of latent heat of vaporization.
Ice at 273 K is less energetic than water. It is because of the difference in the latent heat of fusion which is present in water at the same temperature in the form of extra energy. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/
Ice at 273 K is less energetic than water. It is because of the difference in the latent heat of fusion which is present in water at the same temperature in the form of extra energy.
(a) Water at room temperature is a liquid because it has fluidity and has definite volume but no definite shape. (b) An iron almirah is a solid at room temperature because it is rigid and has a definite shape. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/sRead more
(a) Water at room temperature is a liquid because it has fluidity and has definite volume but no definite shape.
(b) An iron almirah is a solid at room temperature because it is rigid and has a definite shape.
(a) Naphthalene shows the property of sublimation. Evaporation of naphthalene takes place easily and so it disappears during course of time without leaving a solid. (b) Perfumes vaporize very fast and its vapours diffuse into air easily. That is why we can smell perfume sitting several meters away.Read more
(a) Naphthalene shows the property of sublimation. Evaporation of naphthalene takes place easily and so it disappears during course of time without leaving a solid.
(b) Perfumes vaporize very fast and its vapours diffuse into air easily. That is why we can smell perfume sitting several meters away.
What produces more severe burns, boiling water or steam?
Steam produces more severe burns than boiling water. This is because steam has more energy than boiling water, present in it in the form of latent heat of vaporization. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/
Steam produces more severe burns than boiling water. This is because steam has more energy than boiling water, present in it in the form of latent heat of vaporization.
For more answers visit to website:
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Why is ice at 273 K more effective in cooling than water at the same temperature?
Ice at 273 K is less energetic than water. It is because of the difference in the latent heat of fusion which is present in water at the same temperature in the form of extra energy. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/
Ice at 273 K is less energetic than water. It is because of the difference in the latent heat of fusion which is present in water at the same temperature in the form of extra energy.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/
Give two reasons to justify: (a) water at room temperature is a liquid. (b) an iron almirah is a solid at room temperature.
(a) Water at room temperature is a liquid because it has fluidity and has definite volume but no definite shape. (b) An iron almirah is a solid at room temperature because it is rigid and has a definite shape. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/sRead more
(a) Water at room temperature is a liquid because it has fluidity and has definite volume but no definite shape.
(b) An iron almirah is a solid at room temperature because it is rigid and has a definite shape.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/
Arrange the following substances in increasing order of forces of attraction between the particles
Oxygen < Water < Sugar. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/
Oxygen < Water < Sugar.
For more answers visit to website:
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Give reason for the following observations. (a) Naphthalene balls disappear with time without leaving any solid. (b) We can get the smell of perfume sitting several meters away.
(a) Naphthalene shows the property of sublimation. Evaporation of naphthalene takes place easily and so it disappears during course of time without leaving a solid. (b) Perfumes vaporize very fast and its vapours diffuse into air easily. That is why we can smell perfume sitting several meters away.Read more
(a) Naphthalene shows the property of sublimation. Evaporation of naphthalene takes place easily and so it disappears during course of time without leaving a solid.
(b) Perfumes vaporize very fast and its vapours diffuse into air easily. That is why we can smell perfume sitting several meters away.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/