Inside a damp tomb, which deterioration process is amplified via the capillary action in defective Mughal pietra dura?

💡 Explanation

Salt efflorescence damages fragile inlay because capillary action draws groundwater containing dissolved salts into the stone; the salts then crystallize near the surface, exerting pressure and causing spalling. Therefore efflorescence destroys the surface detail, rather than oxidation or abrasion, under dry environmental conditions.

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