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← ScienceWhich risk increases significantly when a cryogenic storage dewar experiences boil-off?
A)Pressure buildup exceeds burst disk rating✓
B)Heat pump efficiency improves suddenly
C)Fluid viscosity decreases unexpectedly
D)Internal thermal conductivity remains constant
💡 Explanation
Vaporization increases pressure via phase transition, because *latent heat absorption* cools the remaining liquid less effectively, therefore, pressure rises leading to potential dewar rupture, rather than viscosity decreasing because the volume now occupies a lesser weight.
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