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​ a) Define latent heat of fusion.
b)Why is ice at 273k more effective in cooling than water of same temperature. Explain.
c)How is kinetic energy of a substance can be increased.
d)Why do ice (solid substance) floats in water. Explain.

Dear Student

Kindly refer to the link for the similar query : 
(a) https://www.meritnation.com/ask-answer/question/define-latent-heat-of-fusion/science/5254037

(b) https://www.meritnation.com/ask-answer/question/why-is-ice-at-273k-more-effective-in-cooling-than-water-a/matter-in-our-surroundings/10374005

(c) The Kinetic energy of substance can be increased by increase in temperature.

(d) https://www.meritnation.com/ask-answer/question/why-does-ice-float-on-water/matter-in-our-surroundings/2511140


Regards

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View Full Answer
a) The heat energy which is required to change one kg of solid into liquid at atmospheric pressure is known as latent heat of fusion
b) ice at 273k is more effective in cooling than water because water contains additional latent heat of fusion
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c) By increasing and decreasing temperature
d) Liquid water and ice form hydrogen bonds. But ice exist in cage like structure due to this cage like structure ,the molecules of water are not closely packed in ice but have vacant spaces between them. Due to this, ice has smaller density than water and float on water
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a) The heat energy which is required to change one kg of solid into liquid at atmospheric pressure is known as latent heat of fusion?

b) ice at 273k is more effective in cooling than water because water contains additional latent heat of fusion

C) we can increase kinetic energy of substance by giving it heat.

D) an object flow on water because it has more desity than water.

I hope it helped :)
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