A change in state directly from solid to gas without changing into liquid state is called _____.
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A.
Sublimation
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B.
Condensation
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C.
Vapourisation
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D.
Fusion
Correct Answer:
A. Sublimation
Explanation:
Sublimation is the process by which a substance transitions directly from a solid phase to a gaseous phase without passing through the intermediate liquid state. This occurs when the vapor pressure of the solid is high enough at a given temperature. In contrast, condensation is gas to liquid, vaporization is liquid to gas, and fusion is solid to liquid. Therefore, the correct term for the described phenomenon is sublimation.
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