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Silver chloride turns grey when kept in sunlight. What is the correct reason?

Answer and explanation

Correct answer: Silver chloride decomposes in light to form silver

Silver chloride is photosensitive. On exposure to sunlight, it undergoes photochemical decomposition: 2AgCl → 2Ag + Cl₂. The finely divided silver produced is grey, so option A correctly explains the colour change. Dissolving in water does not produce grey silver, and the other options contain chemically impossible products or incorrectly identify the process.

Related tags

Photochemical DecompositionSilver ChlorideChemical ReactionsLight SensitivityChemical Reactions And EquationsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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