The triple point for carbondioxide is at about -56.7 C and about 5 atm, pressure. It means that

Thermodynamics Mcqs

A.When solid CO2 is exposed to 1 atm pressure it begins to change directly to gas
B.When CO2 is exposed to a below 5 atmosphere pressure only solid and liquid phase exist together
C.Below 57.7 C CO2 exists only in liquid form
D.Above 56.7 C CO2 exists only as a liquid
E.Mass transfer at triple point is maximum

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