(a) What is sublimation ? Give an example of substance which sublime.
(b) What happen when acetone is poured on the palm ?
CBSE Class IX Science SA 2 (3 Marks)
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(a) Sublimation : Sublimation is the change of a solid directly into the gaseous state without passing through the liquid state upon heating and back to the solid state when the temperature is lowered. Napthalene is a sublime substance.
(b) It will evaporate taking latent heat of vaporization from the palm.
(b) It will evaporate taking latent heat of vaporization from the palm.
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Answer:(a) Sublimation : Sublimation is the change of a solid directly into the gaseous state without passing through the liquid state upon heating and back to the solid state when the temperature is lowered. Napthalene is a sublime substance.
(b) It will evaporate taking latent heat of vaporization from the palm.
Explanation:
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