{"id":86745,"date":"2025-06-01T04:19:57","date_gmt":"2025-06-01T04:19:57","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=86745"},"modified":"2025-06-01T04:19:57","modified_gmt":"2025-06-01T04:19:57","slug":"why-silver-chloride-turns-grey-in-sunlight","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/why-silver-chloride-turns-grey-in-sunlight\/","title":{"rendered":"Why silver chloride turns grey in Sunlight?"},"content":{"rendered":"

Why silver chloride turns grey in Sunlight?<\/p>\n

[amp_mcq option1=”It forms silver metal and is an example of endothermic reaction” option2=”It forms silver metal and is an example of exothermic reaction” option3=”It forms silver metal and is an example of substitution reaction” option4=”It forms silver ion (Ag+<\/sup>) and is an example of endothermic reaction” correct=”option1″]<\/p>\n

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This question was previously asked in<\/div>\n
UPSC Geoscientist – 2021<\/div>\n<\/div>\n
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\nWhen silver chloride (AgCl) is exposed to sunlight, it undergoes a photochemical decomposition reaction. The light energy causes the decomposition of AgCl into silver metal (Ag) and chlorine gas (Cl\u2082). The silver metal produced is grey, which causes the white AgCl to turn grey. This reaction requires energy from sunlight, making it an endothermic process.
\nThe reaction is: 2AgCl(s) + Sunlight \u2192 2Ag(s) + Cl\u2082(g)
\n<\/section>\n
\nSunlight decomposes silver chloride (AgCl) into grey silver metal (Ag) and chlorine gas. This decomposition is an endothermic reaction.
\n<\/section>\n
\nThis photochemical reaction is the basis for early photography techniques (e.g., using silver halide photographic plates or paper). Silver bromide (AgBr) and silver iodide (AgI) also undergo similar photochemical decomposition when exposed to light.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Why silver chloride turns grey in Sunlight? [amp_mcq option1=”It forms silver metal and is an example of endothermic reaction” option2=”It forms silver metal and is an example of exothermic reaction” option3=”It forms silver metal and is an example of substitution reaction” option4=”It forms silver ion (Ag+) and is an example of endothermic reaction” correct=”option1″] This … <\/p>\n

Detailed SolutionWhy silver chloride turns grey in Sunlight?<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1091],"tags":[1110,1096,1109],"class_list":["post-86745","post","type-post","status-publish","format-standard","hentry","category-upsc-geoscientist","tag-1110","tag-chemistry","tag-metals-minerals-ores-properties-uses","no-featured-image-padding"],"yoast_head":"\nWhy silver chloride turns grey in Sunlight?<\/title>\n<meta name=\"description\" content=\"When silver chloride (AgCl) is exposed to sunlight, it undergoes a photochemical decomposition reaction. The light energy causes the decomposition of AgCl into silver metal (Ag) and chlorine gas (Cl\u2082). The silver metal produced is grey, which causes the white AgCl to turn grey. This reaction requires energy from sunlight, making it an endothermic process. The reaction is: 2AgCl(s) + Sunlight \u2192 2Ag(s) + Cl\u2082(g) Sunlight decomposes silver chloride (AgCl) into grey silver metal (Ag) and chlorine gas. This decomposition is an endothermic reaction.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/why-silver-chloride-turns-grey-in-sunlight\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why silver chloride turns grey in Sunlight?\" \/>\n<meta property=\"og:description\" content=\"When silver chloride (AgCl) is exposed to sunlight, it undergoes a photochemical decomposition reaction. The light energy causes the decomposition of AgCl into silver metal (Ag) and chlorine gas (Cl\u2082). The silver metal produced is grey, which causes the white AgCl to turn grey. This reaction requires energy from sunlight, making it an endothermic process. The reaction is: 2AgCl(s) + Sunlight \u2192 2Ag(s) + Cl\u2082(g) Sunlight decomposes silver chloride (AgCl) into grey silver metal (Ag) and chlorine gas. 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