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Which failure is risked when excessive pressure washing damages Mughal Pietra Dura?

A)Detachment of the tesserae
B)Oxidation of metallic pigments
C)Increased substrate thermal expansion
D)Formation of silicate efflorescence

💡 Explanation

Excessive water jet pressure mechanically dislodges the inlaid tesserae (small pieces). The dislodgement occurs because this is far beyond designed adhesive strength, therefore the tesserae detach, rather than pigment oxidation or alteration to adjacent substrate mineral composition.

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