Which risk increases for outdoor Mughal pietra dura when high-alkali mortar is utilized?

💡 Explanation

The risk increases because alkali-silica reaction causes volume expansion, resulting in Efflorescence, the migration of salts to the surface, thereby obscuring colored stone details; therefore staining occurs, rather than solely erosion or metal oxidation.

• Which outcome results when Mughal garden water channels experience evaporative losses?
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