According to phase diagram, which series of phase changes could take place as pressure is decreased at a constant temperature ?
A
Solid to liquid to gas
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B
Solid to gas to liquid
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C
Gas to liquid to solid
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D
Gas to solid to liquid
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E
Liquid to gas to solid
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Solution
The correct option is A Solid to liquid to gas According to phase diagram, the series of phase changes that could take place as pressure is decreased at a constant temperature is solid to liquid to gas. This is represented by red arrow in the graph.