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Which outcome accelerated decay within Mughal pietra dura inlay due to material incompatibility?

A)Galvanic corrosion induced metallic oxidation
B)Delamination caused differential thermal expansion
C)Hygroscopic stress promoted sulfate attack
D)Capillary action enabled salt migration

💡 Explanation

Hygroscopic stress promoted sulfate attack because differing materials absorbed moisture unevenly causing expansion/constraction within the inlay's porous layers, therefore, fracturing the stone, rather than galvanic corrosion because there were few dissimilar metals involved.

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